Pedigree Collapse
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Pedigree Collapse
In genealogy, pedigree collapse describes how reproduction between two individuals who share an ancestor causes the number of distinct ancestors in the family tree of their offspring to be smaller than it could otherwise be. Robert C. Gunderson coined the term; synonyms include implex and the German ''Ahnenschwund'' (loosely translated: "loss of lineage"). Overview Without pedigree collapse, a person's ancestor tree is a binary tree, formed by the person, the parents (2), the grandparents (4), great-grandparents (8), and so on. However, the number of individuals in such a tree grows exponentially and will eventually become impossibly high. For example, a single individual alive today would, over 30 generations going back to the High Middle Ages, have 230 or roughly 1,000 million ancestors, more than the total world population at the time. This paradox is explained by shared ancestors, referred to as pedigree collapse. Instead of consisting of all different individuals, a tree ...
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Genealogy
Genealogy () is the study of families, family history, and the tracing of their lineages. Genealogists use oral interviews, historical records, genetic analysis, and other records to obtain information about a family and to demonstrate kinship and pedigrees of its members. The results are often displayed in charts or written as narratives. The field of family history is broader than genealogy, and covers not just lineage but also family and community history and biography. The record of genealogical work may be presented as a "genealogy", a "family history", or a "family tree". In the narrow sense, a "genealogy" or a "family tree" traces the descendants of one person, whereas a "family history" traces the ancestors of one person, but the terms are often used interchangeably. A family history may include additional biographical information, family traditions, and the like. The pursuit of family history and origins tends to be shaped by several motives, including the desire ...
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Philip, Duke Of Parma
it, Filippo di Borbone , house = Bourbon-Parma (founder) , father = Philip V of Spain , mother = Elisabeth Farnese , birth_date = , birth_place = Royal Alcazar, Madrid, Spain , death_date = , death_place = Alessandria, Italy , religion = Roman Catholicism , signature = The signature of the Duke of Parma in 1764.jpg Philip ( es, Felipe, it, Filippo; 15 March 1720 – 18 July 1765) was Duke of Parma from 18 October 1748 until his death in 1765. He was born a Spanish infante, being the second son of King Philip V and Elisabeth Farnese. The Duchy of Parma had been ruled by the House of Farnese, Queen Elisabeth's family. Philip founded the House of Bourbon-Parma, a cadet line of the House of Bourbon. He was a first cousin and son-in-law of the French king Louis XV. Life Born at the Royal Alcazar in Madrid as ''Felipe de Borbón y Farnesio'', he was the third child and second son of Philip V of Spain and his wife, Elisabeth Farnese. He was ...
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Isabella II Of Spain
Isabella II ( es, Isabel II; 10 October 1830 – 9 April 1904), was Queen of Spain from 29 September 1833 until 30 September 1868. Shortly before her birth, the King Ferdinand VII of Spain issued a Pragmatic Sanction to ensure the succession of his firstborn daughter, due to his lack of a son. She came to the throne a month before her third birthday, but her succession was disputed by her uncle the Infante Carlos (founder of the Carlist movement), whose refusal to recognize a female sovereign led to the Carlist Wars. Under the regency of her mother, Spain transitioned from an absolute monarchy to a constitutional monarchy, adopting the Royal Statute of 1834 and Constitution of 1837. Her effective reign was a period marked by palace intrigues, back-stairs and antechamber influences, barracks conspiracies, and military '' pronunciamientos''. She was deposed in the Glorious Revolution of 1868, and formally abdicated in 1870. Her son, Alfonso XII, became king in 1874. Bi ...
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Princess Luisa Carlotta Of Naples And Sicily
Luisa Carlotta of Naples and Sicily (Luisa Carlotta Maria Isabella; 24 October 1804 – 29 January 1844), was an Italian royal, who was an Infanta of Spain and a daughter of King Francis I of the Two Sicilies. Early life Luisa Carlotta was born at the Palace of Portici, the eldest child of King Francis I and of his wife, Infanta María Isabella of Spain. Her maternal grandparents were King Charles IV of Spain and Queen Maria Luisa of Spain. Luisa Carlotta had eleven younger siblings, including King Ferdinand II of the Two Sicilies. Princess of Spain On 12 June 1819 in Madrid, 14-year-old Luisa Carlotta married her maternal uncle Infante Francisco de Paula of Spain. He was ten years older than Luisa Carlotta. Luisa Carlotta played an important role during the sickness of Ferdinand VII to ensure that her niece, Isabella, became heiress to the Spanish throne instead of her uncle Carlos. She supported the new succession law issued by the king. When the king Ferdinand VII was suff ...
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Maria Christina Of The Two Sicilies
Maria Christina of the Two Sicilies ( it, Maria Cristina Ferdinanda di Borbone, Principessa delle Due Sicilie, es, link=no, María Cristina de Borbón, Princesa de las Dos Sicilias; 27 April 1806 – 22 August 1878) was Queen of Spain from 1829 to 1833 and regent of the Kingdom from 1833 to 1840. By virtue of her marriage to King Ferdinand VII of Spain, she became a central character in Spanish history for nearly 50 years. Early life Born in Palermo, Sicily on 27 April 1806, she was the daughter of King Francis I of the Two Sicilies by his second wife, Maria Isabella of Spain. Queen of Spain On 27 May 1829, Maria Josepha Amalia of Saxony, the third wife of King Ferdinand VII of Spain, died. Ferdinand VII, old and ill, had not sired a male heir, sparking a succession duel between the Infanta Maria Francisca and the Infante Carlos, and the Infanta Luisa Carlotta and the Infante Francisco de Paula. Ferdinand VII declared his intention to marry and assembled the Council of Cast ...
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Infante Francisco De Paula Of Spain
, house = Bourbon-Anjou , father = Charles IV of Spain , mother = Maria Luisa of Parma , birth_date = , birth_place = Aranjuez, Spain , death_date = , death_place = Madrid, Spain , burial_place = El Escorial Infante Francisco de Paula of Spain (10 March 1794 – 13 August 1865) was an Infante of Spain and the youngest son of Charles IV of Spain and Maria Luisa of Parma. He was a brother of Ferdinand VII, as well as the uncle and father-in-law of Isabella II. His education at the Spanish court was derailed by the Napoleonic intervention in Spain. The departure of the fourteen-year-old Infante to exile in May 1808 provoked a popular uprising that was violently suppressed by French troops. For the next ten years, Infante Francisco de Paula lived in exile with his parents, first in Marseille and later in Rome. Infante Francisco de Paula returned to Spain in 1818, being called by his eldest brother, King Ferdinand VII, who showered him with honors and pr ...
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Francis I Of The Two Sicilies
Francis I of the Two Sicilies ( it, Francesco Gennaro Giuseppe Saverio Giovanni Battista; 19 August 1777 – 8 November 1830) was King of the Two Sicilies from 1825 to 1830 and regent of the Kingdom of Sicily from 1806 to 1814. Biography Francis was born the son of Ferdinand I of the Two Sicilies and his wife Archduchess Maria Carolina of Austria in Naples. He was also the nephew of Marie Antoinette and Louis XVI, the last King and Queen of France before the first French Republic. At the death of his older brother Carlo, Duke of Calabria, Francis became the heir-apparent to the throne and ''Duke of Calabria'', the traditional title of the heir apparent to the Neapolitan throne. Later life In 1796 Francis married his double first cousin Archduchess Maria Clementina of Austria, daughter of Leopold II, Holy Roman Emperor. When she died, he married his first cousin María Isabella, daughter of King Charles IV of Spain. After the Bourbon family fled from Naples to Sicily in 1 ...
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María Isabella Of Spain
Maria Isabella of Spain (María Isabel de Borbón y Borbón-Parma; 6 July 1789 – 13 September 1848) was an infanta of Spain and queen consort of the Two Sicilies by marriage to Francis I of the Two Sicilies. Infanta of Spain She was the youngest daughter of King Carlos IV of Spain and his wife Maria Luisa of Parma. María Isabel's birth coincided with the rise to power in Spain of her mother's favorite, Manuel Godoy. Court rumour attributed María Isabel's paternity not to the king, but to the young Godoy, who became Spain's prime minister in 1792.Rubio, '' Reinas de España'', p. 307Rubio, '' Reinas de España'', p. 311 The Infanta's childhood coincided with the events of the French revolution and political turbulence in Spain.Rubio, '' Reinas de España'', p. 308 The youngest surviving daughter in a large family, María Isabel was spoilt by both of her parents and her education was rudimentary.Acton, ''The Bourbons of Naples'', pp. 3, 35, 132-134, 326, 366, 478-479, 679 ...
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Ferdinand VII Of Spain
, house = Bourbon-Anjou , father = Charles IV of Spain , mother = Maria Luisa of Parma , birth_date = 14 October 1784 , birth_place = El Escorial, Spain , death_date = , death_place = Madrid, Spain , burial_place = El Escorial , religion = Roman Catholicism , signature = Ferdinand VII of Spain signature.svg Ferdinand VII ( es, Fernando VII; 14 October 1784 – 29 September 1833) was a King of Spain during the early 19th century. He reigned briefly in 1808 and then again from 1813 to his death in 1833. He was known to his supporters as '' el Deseado'' (the Desired) and to his detractors as '' el Rey Felón'' (the Felon/Criminal King). Born in Madrid at El Escorial, Ferdinand VII spent his youth as heir apparent to the Spanish throne. Following the 1808 Tumult of Aranjuez, he ascended the throne. That year Napoleon overthrew him; he linked his monarchy to counter-revolution and reactionary policies that produced a deep rift in Spain b ...
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Maria Carolina Of Austria
Maria Carolina Louise Josepha Johanna Antonia (13 August 1752 – 8 September 1814) was List of consorts of Naples, Queen of Naples and List of Sicilian consorts, Sicily as the wife of King Ferdinand I of the Two Sicilies. As ''de facto'' ruler of her husband's kingdoms, Maria Carolina oversaw the promulgation of many reforms, including the revocation of the ban on Freemasonry, the enlargement of the navy under her favorite, Sir John Acton, 6th Baronet, Sir John Acton and the expulsion of Spanish influence. She was a proponent of enlightened absolutism until the advent of the French Revolution, when, in order to prevent its ideas gaining currency, she made Naples a police state. Born an archduchess of Austria, the thirteenth child of Empress Maria Theresa and Francis I, Holy Roman Emperor, Emperor Francis I, Maria Carolina married Ferdinand as part of an Austrian alliance with Spain, of which Charles III of Spain, Ferdinand's father was king. Following the birth of a male heir in ...
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Ferdinand I Of The Two Sicilies
Ferdinand I (12 January 1751 – 4 January 1825) was the King of the Two Sicilies from 1816, after his restoration following victory in the Napoleonic Wars. Before that he had been, since 1759, Ferdinand IV of the Kingdom of Naples and Ferdinand III of the Kingdom of Sicily. He was also King of Gozo. He was deposed twice from the throne of Naples: once by the revolutionary Parthenopean Republic for six months in 1799 and again by Napoleon in 1805, before being restored in 1816. Ferdinand was the third son of King Charles VII of Naples and V of Sicily by his wife, Maria Amalia of Saxony. On 10 August 1759, Charles succeeded his elder brother, Ferdinand VI, becoming King Charles III of Spain, but treaty provisions made him ineligible to hold all three crowns. On 6 October, he abdicated his Neapolitan and Sicilian titles in favour of his third son, because his eldest son Philip had been excluded from succession due to imbecility and his second son Charles was heir-apparent to the S ...
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Maria Theresa
Maria Theresa Walburga Amalia Christina (german: Maria Theresia; 13 May 1717 – 29 November 1780) was ruler of the Habsburg dominions from 1740 until her death in 1780, and the only woman to hold the position ''suo jure'' (in her own right). She was the sovereign of Austria, Hungary, Croatia, Bohemia, Transylvania, Mantua, Milan, Lodomeria and Galicia, the Austrian Netherlands, and Parma. By marriage, she was Duchess of Lorraine, Grand Duchess of Tuscany and Holy Roman Empress. Maria Theresa started her 40-year reign when her father, Emperor Charles VI, died on 20 October 1740. Charles VI paved the way for her accession with the Pragmatic Sanction of 1713 and spent his entire reign securing it. He neglected the advice of Prince Eugene of Savoy, who believed that a strong military and a rich treasury were more important than mere signatures. Eventually, Charles VI left behind a weakened and impoverished state, particularly due to the War of the Polish Succession and the Rus ...
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