Lançarote De Freitas
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Lançarote de Freitas, better known as Lançarote de Lagos or Lançarote da Ilha, was a 15th-century Portuguese
explorer Exploration is the process of exploring, an activity which has some Expectation (epistemic), expectation of Discovery (observation), discovery. Organised exploration is largely a human activity, but exploratory activity is common to most organis ...
and
slave Slavery is the ownership of a person as property, especially in regards to their labour. Slavery typically involves compulsory work, with the slave's location of work and residence dictated by the party that holds them in bondage. Enslavemen ...
raider from
Lagos, Portugal Lagos (; ) is a city and concelho, municipality at the mouth of Bensafrim River and along the Atlantic Ocean, in the Barlavento region of the Algarve, in southern Portugal. The population of the municipality in 2011 was 31,049, in an area of 212.99 ...
. He was the leader of two large Portuguese slaving raids on the
West Africa West Africa, also known as Western Africa, is the westernmost region of Africa. The United Nations geoscheme for Africa#Western Africa, United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Gha ...
n coast in 1444–1446.


Background

Lançarote de Freitas, better known as Lançarote da Ilha or simply Lançarote de Lagos, was trained as a
squire In the Middle Ages, a squire was the shield- or armour-bearer of a knight. Boys served a knight as an attendant, doing simple but important tasks such as saddling a horse or caring for the knight's weapons and armour. Terminology ''Squire'' ...
and chamberlain in the household of the Portuguese prince
Henry the Navigator Princy Henry of Portugal, Duke of Viseu ( Portuguese: ''Infante Dom Henrique''; 4 March 1394 – 13 November 1460), better known as Prince Henry the Navigator (), was a Portuguese prince and a central figure in the early days of the Portuguese ...
. Lançarote was appointed as ''almoxarife'' (customs-collector) of
Lagos, Portugal Lagos (; ) is a city and concelho, municipality at the mouth of Bensafrim River and along the Atlantic Ocean, in the Barlavento region of the Algarve, in southern Portugal. The population of the municipality in 2011 was 31,049, in an area of 212.99 ...
in April 1443, succeeding his father-in-law Soeiro da Costa, who resigned the position in his favor. Prince Henry the Navigator had been sending maritime expeditions down the
West Africa West Africa, also known as Western Africa, is the westernmost region of Africa. The United Nations geoscheme for Africa#Western Africa, United Nations defines Western Africa as the 16 countries of Benin, Burkina Faso, Cape Verde, The Gambia, Gha ...
n coast since at least the early 1430s (see
Portuguese discoveries Portuguese maritime explorations resulted in numerous territories and maritime routes recorded by the Portuguese on journeys during the 15th and 16th centuries. Portuguese sailors were at the vanguard of European exploration, chronicling and mapp ...
). But they had yielded very little profit. The expeditions had sailed mostly along the stark
Sahara desert The Sahara (, ) is a desert spanning across North Africa. With an area of , it is the largest hot desert in the world and the list of deserts by area, third-largest desert overall, smaller only than the deserts of Antarctica and the northern Ar ...
coast, with no human settlements in sight nor encounters worth reporting. But in 1443, one of Henry's captains, Nuno Tristão, returned from an expedition with some 14 captive African natives, Sanhaja Berbers seized from small native fishing village he found in the Bay of Arguin (in modern
Mauritania Mauritania, officially the Islamic Republic of Mauritania, is a sovereign country in Maghreb, Northwest Africa. It is bordered by the Atlantic Ocean to the west, Western Sahara to Mauritania–Western Sahara border, the north and northwest, ...
). The elevated banks of Arguin bay were replete with fish, attracting poor desert-dwelling Sanhaja Berbers to set up numerous little fishing settlements on islands and promontories all around the bay. It was the first human habitations that Henry's captains had come across after a decade of exploring, and they seemed weak and vulnerable. The prospect of easy and profitable slave-raiding grounds around the Arguin banks aroused the interest of many Portuguese merchants and fortune-seeking adventurers. To immediately secure his title, in October 1443,
Henry the Navigator Princy Henry of Portugal, Duke of Viseu ( Portuguese: ''Infante Dom Henrique''; 4 March 1394 – 13 November 1460), better known as Prince Henry the Navigator (), was a Portuguese prince and a central figure in the early days of the Portuguese ...
received from his brother, the regent prince
Peter of Coimbra Dom (honorific), Dom Peter, Duke of Coimbra, Order of the Garter, KG ( ; 9 December 1392 – 20 May 1449) was a Infante of Portugal, Portuguese ''infante'' (prince) of the House of Aviz, son of King Dom John I of Portugal and his wife, Philippa ...
, letters patent granting him an exclusive monopoly over all navigation south of
Cape Bojador Cape Bojador (, Arabic transliteration, trans. ''Rā's Būjādūr''; , ''Bujdur''; Spanish language, Spanish and ; ) is a headland on the west coast of Western Sahara, at 26° 07' 37"N, 14° 29' 57"W (various sources give various locations: this ...
, whether for the purpose of war or trade. Any ship sailing south of it without Henry's license could be confiscated. Peter's letters also granted Henry the
royal fifth The royal fifth (), () is a historical royal tax which reserves to the monarch 20% of all precious metals and other commodities (including slaves) acquired by his subjects as war loot, found as treasure or extracted by mining. The 'royal fifth' ...
and customs duties (tenth on imports) normally due to the Portuguese crown, on any African goods or slaves brought back to metropolitan Portugal. A consortium of merchants of Lagos, sometimes referred to as the ''Companhia de Lagos'' ('Lagos Company', although it was probably little more than a temporary association of merchants, rather than an incorporated
company A company, abbreviated as co., is a Legal personality, legal entity representing an association of legal people, whether Natural person, natural, Juridical person, juridical or a mixture of both, with a specific objective. Company members ...
in the proper sense), applied to Henry for a license. Probably on account of his intimate relationship with Henry, the Lagos merchants elected Lançarote as their head.


First slave raid (1444)

Having acquired their license, the Lagos company equipped a fleet of six
slave ship Slave ships were large cargo ships specially built or converted from the 17th to the 19th century for transporting Slavery, slaves. Such ships were also known as "Guineamen" because the trade involved human trafficking to and from the Guinea ( ...
s and about thirty men that set out for the Arguin banks in the spring of 1444. The six captains are usually recorded as: * 1. Lançarote de Freitas * 2. Gil Eanes * 3. Estêvão Afonso * 4. Rodrigo Álvares * 5. João Dias * 6. Uncertain (variously given as Martim Vicente, Gil Vasques, João Bernaldez or even Gonçalo de Sintra). In his own later memoir,
Diogo Gomes Diogo Gomes () was a Portuguese navigator, explorer and writer. Diogo Gomes was a servant and explorer of Portuguese prince, Henry the Navigator. His memoirs were dictated late in his life to Martin Behaim. They are an invaluable (if sometimes ...
identifies himself as having participating in this expedition. Lançarote's fleet headed straight to the southern end of the Arguin Bay, where they had been told by Nuno Tristão's captives that populous fishing settlements could be found. They arrived in Arguin in June, 1444. A pre-dawn raid on ''Nar'' (
Nair The Nair (, ) also known as Nayar, are a group of Indian Hindu castes, described by anthropologist Kathleen Gough as "not a unitary group but a named category of castes". The Nair include several castes and many subdivisions, not all of whom hi ...
island) yielded the first set of victims. This was followed up by raids on the larger neighboring island of ''Tider'' ( Tidra island) and ''Cerina'' (Serenni peninsula). In just a few days, the Lagos fleet had kidnapped some 235 hapless
Berber people Berbers, or the Berber peoples, also known as Amazigh or Imazighen, are a diverse grouping of distinct ethnic groups indigenous to North Africa who predate the arrival of Arabs in the Maghreb. Their main connections are identified by their u ...
. The remaining population having fled the coastal settlements and hidden in the hinterlands, there was little point remaining in the area. By early August, 1444, the fleet had arrived back in Lagos with their human cargo. The spectacle of the disembarkation, partition and sale of the Arguin slaves in Lagos, in the presence of Prince Henry, mounted on his horse, is described in heart-breaking detail in Zurara's ''Crónica''. For this lucrative enterprise, Lançarote was
knighted A knight is a person granted an honorary title of a knighthood by a head of state (including the pope) or representative for service to the monarch, the church, or the country, especially in a military capacity. The concept of a knighthood ...
by Henry on the spot (August 8, 1444) (even though, according to Zurara, Henry gave away his own allotment - some 46 enslaved people, to which he was entitled as licenser of the expedition - among his captains and household servants).


Second slave raid (1445/1446)

Lançarote organized a second Lagos fleet for another large slave raid in 1445 (or 1446). The Lagos fleet was composed of 14 ships, the captains normally given as: * 1. Lançarote de Freitas * 2. Soeiro da Costa ('' alcaide'' of Lagos and Lançarote's father-in-law) * 3. Álvaro de Freitas (probably a relative of Lançarote) * 4. Gomes Pires (captain of the king's caravel) * 5. Rodrigo Eanes Travassos (of the household of the regent
Peter of Coimbra Dom (honorific), Dom Peter, Duke of Coimbra, Order of the Garter, KG ( ; 9 December 1392 – 20 May 1449) was a Infante of Portugal, Portuguese ''infante'' (prince) of the House of Aviz, son of King Dom John I of Portugal and his wife, Philippa ...
), * 6. a knight known as Palançano (aboard a fusta) * 7. Vicente Dias of Lagos * 8. Martim Vicente * 9. a captain nicknamed Picanço (speculated to be
Diogo Gomes Diogo Gomes () was a Portuguese navigator, explorer and writer. Diogo Gomes was a servant and explorer of Portuguese prince, Henry the Navigator. His memoirs were dictated late in his life to Martin Behaim. They are an invaluable (if sometimes ...
) * 10. Lourenço Dias and, more speculatively: * 11. Diogo Gonçalves, * 12. Pedro Alemão, * 13. Gil Gonçalves, * 14. Leonel Gil (son of Gil Eanes). This fleet is said to have carried Gil Eanes and Estêvão Afonso as passengers. Setting out in August, 1445 (or 1446), Lançarote's Lagos fleet was just one of several fleets that set out from Portugal for the Arguin banks that year. Caught by bad weather, Lançarote arrived at Cape Blanc with only nine ships still together, the remaining having strayed off. He proceeded to the northern end of the Arguin banks, anchoring in at ''ilha das Graças'' (uncertain, possibly Madeleine island or Pelicans island). There, Lançarote was met by one of his missing ships, Vicente Dias, that had gone on ahead to Arguin island and stumbled across a small fleet of three Lisbon ships, headed by Dinis Eanes de Grã, who had preceded them and devastated the remaining settlements on the northern end of the bay, kidnapping some 100 people. At Grã's suggestion, Lançarote's fleet, now thirteen strong (only Palançano's fusta remained unaccounted for) attacked Arguin island again, taking four captives. They then headed to the southern end of Arguin Bay, kidnapping 57 Tider people and an additional five people somewhere further down (possibly around Cape Timris). The element of surprise being gone and the bulk of the population having already evacuated the coast, Lançarote's captives were principally Sanhaja Berber tribesmen who had decided to stay and put up a fight. Dissatisfied with the "meager" number of human beings they had taken, and realizing that Arguin Bay was too thoroughly deserted to yield up any more, Lançarote decided to take his fleet south to raid the Wolof lands of
Senegal Senegal, officially the Republic of Senegal, is the westernmost country in West Africa, situated on the Atlantic Ocean coastline. It borders Mauritania to Mauritania–Senegal border, the north, Mali to Mali–Senegal border, the east, Guinea t ...
, which had been discovered (but not yet raided) by Nuno Tristão and Dinis Dias the previous year. However, not all his ships were up for the journey, several of them running short on supplies. As a result, Lançarote partitioned his fleet, taking only six or seven caravels with him, sending the remaining ships back to Lagos under the command of Soeiro da Costa (a few of which would conduct an unauthorized slave raid on the
Canary Islands The Canary Islands (; ) or Canaries are an archipelago in the Atlantic Ocean and the southernmost Autonomous communities of Spain, Autonomous Community of Spain. They are located in the northwest of Africa, with the closest point to the cont ...
of
La Palma La Palma (, ), also known as ''La isla bonita'' () and historically San Miguel de La Palma, is the most northwesterly island of the Canary Islands, a Spanish autonomous community and archipelago in Macaronesia in the North Atlantic Ocean. La Pa ...
and
Gomera La Gomera () is one of Spain's Canary Islands, in the Atlantic Ocean off the coast of Africa. With an area of , it is the third-smallest of the archipelago's eight main islands. It belongs to the province of Santa Cruz de Tenerife. La Gome ...
on their way home). Lançarote's squadron soon arrived at Barbary Point, the mouth of the
Senegal River The Senegal River ( or "Senegal" - compound of the  Serer term "Seen" or "Sene" or "Sen" (from  Roog Seen, Supreme Deity in Serer religion) and "O Gal" (meaning "body of water")); , , , ) is a river in West Africa; much of its length mark ...
, which had not yet been explored by Europeans. Lançarote dispatched Estêvão Afonso and Vicente Dias on a launch to search upriver for settlements. The exploration didn't get very far. Venturing ashore at one point along the river bank, Afonso abducted two Wolof children from a local woodsman's hut, only to be chased down and furiously beaten by their father. Having barely escaped with their lives, the launch immediately returned (with the two kidnapped children) to the waiting caravels. After sending back yet another caravel to Lagos, Lançarote proceeded with his five remaining ships to sail around Cape Vert and enter Dakar Bay. While rounding the Cape, the squadron made a brief stop on an island (probably Madeleine islands), where they found a bunch of wild goats and some fresh water. They then proceed into the bay and landed on a second island -
Gorée (; "Gorée Island"; ) is one of the 19 (i.e. districts) of the city of Dakar, Senegal. It is an island located at sea from the main harbour of Dakar (), famous as a destination for people interested in the Atlantic slave trade. Its populatio ...
island (marked on Portuguese maps as ''Bezeguiche''). The island was uninhabited, and they marveled at the large wide trees there (probably baobab trees). But they also found signs of prior human presence - some goat skins and a carved marker with Henry the Navigator's motto (''Talent de bien faire''). These had been left behind on the Gorée island by
Álvaro Fernandes Álvaro Fernandes (sometimes given erroneously as António Fernandes), was a 15th-century Portuguese explorer from Madeira, in the service of Henry the Navigator. He captained two important expeditions (in 1445 and 1446), which expanded the limit ...
, a Portuguese explorer from Madeira who had preceded them there only a few weeks earlier. During his stay, Alvaro Fernandes had attempted to seize a couple of native canoes in Dakar Bay, with the result that the Wolof (or more probably Lebou) tribesmen of the mainland were already alert and in arms against the arriving ships of Lançarote's fleet. With the Wolof warriors mustered on the beach, the Portuguese did not dare land for another day and night. Finally, to break the impasse, Lançarote sent out Gomes Pires on a launch to the mainland, hoping to open negotiations with the local chieftains. Pires managed to lay out some gift goods (mirror, cake, paper, etc.) on the beach and withdraw. But rather than curiosity or delight, the Wolof warriors came out and angrily destroyed the gift goods with their spears. Gomes Pires ordered the Portuguese on the launch to ready their crossbows. They approached the beach again, but they were greeted with a hail of thrown
assegai An assegai or assagai is a polearm used for throwing, usually a light spear or javelin made up of a wooden handle with an iron tip. Area of use The use of various types of the assegai was widespread all over Africa and it was the most common we ...
s and poisoned arrows and forced to retreat. Their first strategy foiled, Lançarote and the Portuguese captains held a conference on Gorée. According to Barros, the captains agreed to launch a raid on the mainland Wolof villages 'in the style' of Arguin. But this came to naught. Before being able to organize the attack, a sudden storm enveloped the area (a
Cape Verde hurricane A Cape Verde hurricane or Cabo Verde hurricane is an Atlantic hurricane that originates at low-latitude in the tropical Atlantic from a tropical wave that has passed over or near the Cape Verde islands after exiting the coast of West Africa. Th ...
?), and forced the Portuguese caravels out of Dakar bay, scattering them in various directions. (Zurara makes no report of the planned attack or storm; he says merely the Portuguese captains decided they ought to depart and sail back north and try their luck at the
Senegal River The Senegal River ( or "Senegal" - compound of the  Serer term "Seen" or "Sene" or "Sen" (from  Roog Seen, Supreme Deity in Serer religion) and "O Gal" (meaning "body of water")); , , , ) is a river in West Africa; much of its length mark ...
again). Bad weather overtook them upon leaving Dakar bay and split the fleet. Lançarote managed to hold two caravels (Álvaro de Freitas and Vicente Dias) together with his own, but lost sight of the remaining two ships. Perhaps realizing they were now too few to launch an attack on the Wolof mainland, Lançarote's trio skipped past the Senegal River, and set sail back to the Arguin banks. The trio anchored in again at Tider and took an additional 59 captives, before returning to Lagos. The remaining two ships (Gomes Pires and Lourenço Dias) had to make their way back to Portugal by themselves. On his way, Gomes Pires made a brief stop in Cape Blanc, and bought some seal pelts and a Black slave from some Berber traders. Before proceeding back to Portugal, Pires promised to return to the same spot next year, and the Berber traders promised to bring him enough slaves, gold and other goods to fill his ship. Only Lourenço Dias actually made it inside the Senegal River, but realizing he was alone, decided to turn around and sailed back home by himself.


Aftermath

In number of captives, the second 1445/6 slaving expedition had been somewhat of a "disappointment" (at least relative to the first 1444 attack). The prospect for future slave raids seemed dim. The Arguin banks were devastated and it was unlikely the Berber populations would return to the coasts in significant numbers, or allow themselves to be taken by surprise. The Wolof-dominated coasts of Senegal were too strong and alert for small groups of venturing Portuguese slave-raiders. If slave raids were to have any prospect of kidnapping people, the element of surprise was necessary, which now meant sailing well below Senegal to new "hunting grounds" - lengthier expeditions which required probably more supplies and capital than what Lagos merchants were willing to front or captains willing to sail. The killing of Nuno Tristão and his crew the next year (1446 or 1447) probably dampened any remaining enthusiasm among Lagos merchants for renewing the slave raids. Portuguese slave-raiding expeditions seem to have been suspended after 1447 ( Zurara's chronicle ends here). Given the growing expenses and casualties, it seems the Portuguese switched from slave-raiding to slave-trading after this. Prince Henry ordered the erection of a permanent
factory A factory, manufacturing plant or production plant is an industrial facility, often a complex consisting of several buildings filled with machinery, where workers manufacture items or operate machines which process each item into another. Th ...
on Arguin island by 1450, to tap into the Trans-Saharan trade traffic in slaves and gold coming up overland from
Guinea Guinea, officially the Republic of Guinea, is a coastal country in West Africa. It borders the Atlantic Ocean to the west, Guinea-Bissau to the northwest, Senegal to the north, Mali to the northeast, Côte d'Ivoire to the southeast, and Sier ...
. The slave-trader and explorer
Alvise Cadamosto Alvise Cadamosto (surname cf. ''Ca' da Mosto, da Cadamosto, da Ca' da Mosto''; also known in Portuguese as ''Luís Cadamosto''; mononymously ''Cadamosto'') (; ) (c. 1432 – 16 July 1483) was a Venetian explorer and slave trader, who was hired by ...
, who travelled to West Africa in 1455 with Henry's license, provides some details of trade at Arguin. He noted that to keep the peace around Arguin, Prince Henry had instituted a prohibition on any further kidnapping of Berber Sanhaja people, and only allowed the acquisition of pagan Black African slaves by trade. In his memoir, Cadamosto claims that the Portuguese had also negotiated the establishment of trading posts with the Wolof kingdoms of
Waalo Waalo () was a kingdom on the lower Senegal River in West Africa, in what is now Senegal and Mauritania. It included parts of the valley proper and areas north and south, extending to the Atlantic Ocean. To the north were Moorish emirates; to the ...
and Kayor along the
Grande Côte The Grande Côte is a stretch of coastline in Senegal, running north from the Cap-Vert peninsula of Dakar to the border with Mauritania at Saint-Louis, Senegal, St-Louis. A sandy beach runs along the entire coast, which, unlike the Petite Côte, ...
of Senegal. It has been suggested that Lourenço Dias, one of the captains of Lançarote's slave raid of 1445/46, returned to the Senegal region (sometime between 1448 and 1455), and negotiated peace and trade agreements with the Wolof statelets. Regular trade subsequently opened in the area, the Portuguese exchanging Mediterranean goods (notably, horses) for slaves and gold. This can be said to be the beginning of the
Atlantic slave trade The Atlantic slave trade or transatlantic slave trade involved the transportation by slave traders of Slavery in Africa, enslaved African people to the Americas. European slave ships regularly used the triangular trade route and its Middle Pass ...
. The new trading stations at Arguin and Senegal were estimated by Cadamosto have to have bought 700-800 African slaves annually to metropolitan Portugal by the mid-1450s. But there would be no resumption of the slave razzias of 1444–47. There is no record of any Portuguese ship sailing below Cape Vert again for nearly a decade (until Cadamosto in 1455).


Later life

Little more is heard about Lançarote de Lagos after his second raiding expedition of 1445/46. He continued as customs-collector (''almoxarife'') in
Lagos Lagos ( ; ), or Lagos City, is a large metropolitan city in southwestern Nigeria. With an upper population estimated above 21 million dwellers, it is the largest city in Nigeria, the most populous urban area on the African continent, and on ...
. Having been knighted after his first expedition, Lançarote was promoted by the regent Peter as "caudel" of Lagos in May, 1446. There are documents suggesting Lançarote was organizing and sending provisions supply ships from Lagos to
Ceuta Ceuta (, , ; ) is an Autonomous communities of Spain#Autonomous cities, autonomous city of Spain on the North African coast. Bordered by Morocco, it lies along the boundary between the Mediterranean Sea and the Atlantic Ocean. Ceuta is one of th ...
between 1452 and 1455. Records show Lançarote was still alive in May, 1463, after which there is no further trace.See footnote in ''Monumenta Henricina'', vol. 8
p.45-46


Notes


Sources


Chronicles

*
Alvise Cadamosto Alvise Cadamosto (surname cf. ''Ca' da Mosto, da Cadamosto, da Ca' da Mosto''; also known in Portuguese as ''Luís Cadamosto''; mononymously ''Cadamosto'') (; ) (c. 1432 – 16 July 1483) was a Venetian explorer and slave trader, who was hired by ...
(wr. 1460s, pub. 1507) "Il Libro di Messer Alvise Ca da Mosto Gentilhuomo Venetiano", as printed in Venice (1550), by
Giovanni Battista Ramusio Giovanni Battista Ramusio (; July 20, 1485 – July 10, 1557) was an Italian geographer and travel writer. Born in Treviso, Italy, at that time in the Republic of Venice, Ramusio was the son of Paolo Ramusio, a magistrate of the Venetian ...
, ed., ''Primo volume delle navigationi et viaggi nel qua si contine la descrittione dell'Africa''
online
(English translation: "Original Journals of the Voyages of Cada Mosto and Piedro de Cintra to the Coast of Africa, the former in the years 1455 and 1456, and the latter soon afterwards", in R. Kerr, 1811, ''A General History of Voyages and Travels to the end of the 18th century'', vol. 2, Edinburgh: Blackwood.
online
*
Diogo Gomes Diogo Gomes () was a Portuguese navigator, explorer and writer. Diogo Gomes was a servant and explorer of Portuguese prince, Henry the Navigator. His memoirs were dictated late in his life to Martin Behaim. They are an invaluable (if sometimes ...
(c.1499) ''De prima inventione Guineae'' [trans. by Gabriel Pereira (1898–99) as "As Relações do Descobrimento da Guiné e das ilhas dos Açores, Madeira e Cabo Verde" in ''Boletim da Sociedade de Geografia de Lisboa'', no. 5. * João de Barros (1552–59) ''Décadas da Ásia: Dos feitos, que os Portuguezes fizeram no descubrimento, e conquista, dos mares, e terras do Oriente''. Vol. 1 (Dec I, Lib.1-5) * Gomes Eanes de Zurara (1453) ''Crónica dos feitos notáveis que se passaram na Conquista da Guiné por mandado do Infante D. Henrique or Chronica do descobrimento e conquista da Guiné''. rans. 1896–99 by C.R. Beazley and E. Prestage, ''The Chronicle of the Discovery and Conquest of Guinea'', London: Halykut*
Manuel de Faria e Sousa Manuel de Faria e Sousa (; ; 18 March 1590 – 3 June 1649) was a Portuguese historian and poet who frequently wrote in Spanish. Born into a Portuguese noble family, Faria e Sousa studied in Braga before serving the Bishop of Porto. Aside from ...
(1675) "Empieça la Memoria de todas las Armadas", in ''Asia Portuguesa'', Vol. 3
p.525-61


Secondary

* Cortesão, Armando (1931) "Subsídios para a história do Descobrimento de Cabo Verde e Guiné", Boletim da Agencia Geral das Colonias, No. 75. As reprinted in 1975, Esparsos, vol. 1, Coimbra * Diffie, Bailey W., and George D. Winius (1977) ''Foundations of the Portuguese empire, 1415-1580'' Minneapolis, MN: University of Minnesota Press * Magalhães Godinho, Vitorino (1983) ''Os descobrimentos e a economia mundial'', 2nd ed., v.4. * Quintella, Ignaco da Costa (1839–40) ''Annaes da Marinha Portugueza'', 2 vols, Lisbon: Academia Real das Sciencias
vol. 1
* Oliveira, Aurelio de (2002) ""Diogo Gomes: trato e diplomacia ao serviço da Expansão", ''Revista da Faculdade de Letras'', Porto, p. 163. * Rau, Virginia, and Diffie, B. W. (1953) "Alleged Fifteenth - Century Portuguese Joint - Stock Companies and the Articles of Dr. Fitzler" , ''Bulletin of the Institute of Historical Research'', v.26, p. 181 * Russell, Peter E. (2000) ''Prince Henry 'the Navigator': a life''. New Haven, Conn: Yale University Press. * Teixera da Mota, Avelino (1946) "A descoberta da Guiné", ''Boletim cultural da Guiné Portuguesa'', Vol. 1. No. 1 (Jan), p. 11-68, No. 2 (Apr), p. 273-326; No. 3 (Jul), p. 457-509. {{DEFAULTSORT:Freitas, Lancarote de 15th-century explorers of Africa Portuguese explorers of Africa 15th-century Portuguese explorers History of Mauritania History of Senegal Maritime history of Portugal People from Lagos, Portugal 15th-century Portuguese businesspeople Portuguese slave traders