
Otto IV (1175 – 19 May 1218) was the
Holy Roman Emperor from 1209 until his death in 1218.
Otto spent most of his early life in England and France. He was a follower of his uncle
Richard the Lionheart, who made him
Count of Poitou in 1196. With Richard's support, he was elected
King of Germany by one faction in a disputed election in 1198, sparking
ten years of civil war. The death of his rival,
Philip of Swabia, in 1208 left him sole king of Germany.
In 1209, Otto
marched to Italy to be crowned emperor by
Pope Innocent III. In 1210, he sought to unite the
Kingdom of Sicily
The Kingdom of Sicily ( la, Regnum Siciliae; it, Regno di Sicilia; scn, Regnu di Sicilia) was a state that existed in the south of the Italian Peninsula and for a time the region of Ifriqiya from its founding by Roger II of Sicily in 1130 un ...
with the Empire, breaking with Innocent, who
excommunicated
Excommunication is an institutional act of religious censure used to end or at least regulate the communion of a member of a congregation with other members of the religious institution who are in normal communion with each other. The purpose ...
him. He allied with England against France and took part in the alliance's
defeat at Bouvines in 1214. He was abandoned by most of his supporters in 1215 and lived the rest of his life in retirement on his estates near
Brunswick. He was the only German king of the
Welf dynasty
The House of Welf (also Guelf or Guelph) is a European dynasty that has included many German and British monarchs from the 11th to 20th century and Emperor Ivan VI of Russia in the 18th century. The originally Franconian family from the Meuse ...
.
Career
Early life
Otto was the third son of
Henry the Lion,
Duke of Bavaria and
Duke of Saxony, by his wife
Matilda of England.
[Bryce, pg. 206] His exact birthplace is not given by any original source. He grew up in England
[Abulafia, pg. 378] in the care of his maternal grandfather, King
Henry II of England
Henry II (5 March 1133 – 6 July 1189), also known as Henry Curtmantle (french: link=no, Court-manteau), Henry FitzEmpress, or Henry Plantagenet, was King of England from 1154 until his death in 1189, and as such, was the first Angevin king ...
. Otto was fluent in French as well as German. He became the foster son of his maternal uncle King
Richard I of England
Richard I (8 September 1157 – 6 April 1199) was King of England from 1189 until his death in 1199. He also ruled as Duke of Normandy, Duke of Aquitaine, Aquitaine and Duchy of Gascony, Gascony, Lord of Cyprus, and Count of Poitiers, Co ...
. In 1190, after he left England to join the
Third Crusade
The Third Crusade (1189–1192) was an attempt by three European monarchs of Western Christianity ( Philip II of France, Richard I of England and Frederick I, Holy Roman Emperor) to reconquer the Holy Land following the capture of Jerusalem by ...
, Richard appointed Otto as
Earl of York. The authenticity (or authority) of this grant was doubted by the vassals of Yorkshire, who prevented Otto taking possession of his earldom. Still, he probably visited Yorkshire in 1191, and he continued to claim the revenues of the earldom after becoming king of Germany, although he never secured them. Neither did he succeed in getting the 25,000 silver marks willed to him by his uncle in 1199.
In 1195, Richard began negotiations to marry Otto to
Margaret, daughter and heir presumptive of King
William the Lion of Scotland.
Lothian, as Margaret's dowry, would be handed over to Richard for safekeeping and the counties of
Northumberland
Northumberland () is a ceremonial counties of England, county in Northern England, one of two counties in England which border with Scotland. Notable landmarks in the county include Alnwick Castle, Bamburgh Castle, Hadrian's Wall and Hexham Ab ...
and
Cumberland (Carlisle) would be granted to Otto and turned over to the king of Scotland. The negotiations dragged on until August 1198, when the birth of a son and heir to William rendered them unnecessary. Having failed in his efforts to secure Otto an English earldom or else a Scottish kingdom, in September 1196 Richard, as duke of Aquitaine, enfeoffed Otto with the
county of Poitou. There is some disagreement over whether Otto received Poitou in exchange for or in addition to the earldom of York.
Otto was in Poitou from September 1196 until mid-1197, when he joined Richard in Normandy to confer over the appointment of bishops to the vacant sees of
Poitiers
Poitiers (, , , ; Poitevin: ''Poetàe'') is a city on the River Clain in west-central France. It is a commune and the capital of the Vienne department and the historical centre of Poitou. In 2017 it had a population of 88,291. Its agglome ...
,
Limoges
Limoges (, , ; oc, Lemòtges, locally ) is a city and Communes of France, commune, and the prefecture of the Haute-Vienne Departments of France, department in west-central France. It was the administrative capital of the former Limousin region ...
and
Périgueux. He then participated in the war against
Philip II of France
Philip II (21 August 1165 – 14 July 1223), byname Philip Augustus (french: Philippe Auguste), was King of France from 1180 to 1223. His predecessors had been known as kings of the Franks, but from 1190 onward, Philip became the first French m ...
on the side of Richard. In October he returned to Poitou. The German historian Jens Ahlers, taking into account Otto's life prior to 1198, considers that he might have been the first foreign king of Germany.
Conflict with Philip of Swabia
After the death of
Emperor Henry VI, the majority of the princes of the Empire, situated in the south,
elected Henry's brother Philip king in March 1198, after receiving money and promises from Philip in exchange for their support.
[Comyn, pg. 275] But those princes opposed to the
Hohenstaufen dynasty decided, on the initiative of Richard of England,
to elect instead a member of the House of Welf. Otto's elder brother,
Henry, was participating in the
Crusade of 1197 at the time, and so the choice fell to Otto. Otto, soon recognized throughout the northwest and the lower Rhine region,
was elected king by his partisans in
Cologne
Cologne ( ; german: Köln ; ksh, Kölle ) is the largest city of the German western state of North Rhine-Westphalia (NRW) and the fourth-most populous city of Germany with 1.1 million inhabitants in the city proper and 3.6 millio ...
on 9 June 1198.
Otto took control of
Aachen, the place of coronation, and was crowned by Archbishop
Adolf of Cologne on 12 July 1198.
This was of great symbolic importance, since the
archbishop of Cologne alone could crown the
king of the Romans.
The coronation was done with fake
imperial regalia, because the actual materials were in the hands of the Hohenstaufen.
Otto's election pulled the empire into the conflict between
England
England is a country that is part of the United Kingdom. It shares land borders with Wales to its west and Scotland to its north. The Irish Sea lies northwest and the Celtic Sea to the southwest. It is separated from continental Europe ...
and
France
France (), officially the French Republic ( ), is a country primarily located in Western Europe. It also comprises of overseas regions and territories in the Americas and the Atlantic, Pacific and Indian Oceans. Its metropolitan ar ...
. Philip had allied himself with the French king,
Philip II, while Otto was supported at first by Richard I, and after his death in 1199 by his brother
John.
[Comyn, pg. 278]
The papacy meanwhile, under
Innocent III, determined to prevent the continued unification of
Sicily
(man) it, Siciliana (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 = Ethnicity
, demographics1_footnotes =
, demographi ...
and the
Holy Roman Empire
The Holy Roman Empire was a political entity in Western, Central, and Southern Europe that developed during the Early Middle Ages and continued until its dissolution in 1806 during the Napoleonic Wars.
From the accession of Otto I in 962 ...
under one monarch seized the opportunity to extend its influence. Therefore, Innocent III favoured Otto, whose family had always been opposed to the house of Hohenstaufen.
Otto himself also seemed willing to grant any demands that Innocent would make. The confusion in the empire allowed Innocent to drive out the imperial feudal lords from
Ancona
Ancona (, also , ) is a city and a seaport in the Marche region in central Italy, with a population of around 101,997 . Ancona is the capital of the province of Ancona and of the region. The city is located northeast of Rome, on the Adriatic ...
,
Spoleto, and
Perugia
Perugia (, , ; lat, Perusia) is the capital city of Umbria in central Italy, crossed by the River Tiber, and of the province of Perugia.
The city is located about north of Rome and southeast of Florence. It covers a high hilltop and par ...
, who had been installed by Emperor Henry VI.
[Comyn, pg. 277]
At the same time, Innocent encouraged the cities in
Tuscany
it, Toscano (man) it, Toscana (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 = Citizenship
, demographics1_footnotes =
, demographics1_title1 = Italian
, demogra ...
to form a league, called the
League of San Genesio, against imperial interests in Italy. The cities placed themselves under Innocent's protection.
In 1201, Innocent announced that he recognized Otto as the only legitimate king. In return, Otto promised to support the pope's interests in Italy. Otto also had the support of
Ottokar I of Bohemia, who although at first siding with Philip of Swabia, eventually threw in his lot with Otto.
[Dunham, pg. 195] Otto's cause was further strengthened by the support of
Valdemar II of Denmark. Philip achieved a great deal of success in the civil war that followed, allowing him in 1204 to be again crowned king, this time by the archbishop of
Cologne
Cologne ( ; german: Köln ; ksh, Kölle ) is the largest city of the German western state of North Rhine-Westphalia (NRW) and the fourth-most populous city of Germany with 1.1 million inhabitants in the city proper and 3.6 millio ...
.
In the following years, Otto's situation worsened because after England's defeat by France he lost England's financial support. Many of his allies changed sides to Philip, including his brother Henry. Otto was defeated and wounded in battle by Philip on 27 July 1206, near
Wassenberg, and as a consequence he also lost the support of the pope, who began to favour the apparent winner in the conflict. Otto was forced to retire to his possessions near
Brunswick, leaving Philip virtually uncontested as German king.
Innocent III forced the two warring parties into negotiations at
Cologne
Cologne ( ; german: Köln ; ksh, Kölle ) is the largest city of the German western state of North Rhine-Westphalia (NRW) and the fourth-most populous city of Germany with 1.1 million inhabitants in the city proper and 3.6 millio ...
, and in exchange for renouncing his claim to the throne, Philip promised Otto the hand of his daughter Beatrix in marriage, together with the
Duchy of Swabia and an enormous dowry.
Otto refused, and as the civil war was again about to recommence, Philip was murdered on 21 June 1208.
After Philip's death, Otto made amends with the Staufen party and became engaged to Philip's daughter Beatrix.
[Comyn, pg. 279] In the
1208 imperial election The imperial election of 1208 was an imperial election held to select the emperor of the Holy Roman Empire. It took place in Frankfurt on November 11.
As a result of the election, Otto IV was unanimously named Holy Roman Emperor
The Holy Rom ...
in
Frankfurt
Frankfurt, officially Frankfurt am Main (; Hessian: , " Frank ford on the Main"), is the most populous city in the German state of Hesse. Its 791,000 inhabitants as of 2022 make it the fifth-most populous city in Germany. Located on its ...
on 11 November 1208, he gained the support of all the electoral princes, as he promised he would not make hereditary claims to the imperial crown on behalf of any children he might father.
Now fully reconciled with Innocent, Otto made preparations to be crowned
Holy Roman Emperor. To secure Innocent's support, he promised to restore to the Papal States all territory that it had possessed under
Louis the Pious
Louis the Pious (german: Ludwig der Fromme; french: Louis le Pieux; 16 April 778 – 20 June 840), also called the Fair, and the Debonaire, was King of the Franks and co-emperor with his father, Charlemagne, from 813. He was also King of Aqui ...
, including the
March of Ancona, the
Duchy of Spoleto
The Duchy of Spoleto (, ) was a Lombard territory founded about 570 in central Italy by the Lombard '' dux'' Faroald. Its capital was the city of Spoleto.
Lombards
The Lombards had invaded Italy in 568 AD and conquered much of it, establish ...
, the former
Exarchate of Ravenna
The Exarchate of Ravenna ( la, Exarchatus Ravennatis; el, Εξαρχάτο της Ραβέννας) or of Italy was a lordship of the Eastern Roman Empire (Byzantine Empire) in Italy, from 584 to 751, when the last exarch was put to death by the ...
, and the
Pentapolis
A pentapolis (from Ancient Greek, Greek ''penta-'', 'five' and ''polis'', 'city') is a geographic and/or institutional grouping of five cities. Cities in the ancient world probably formed such groups for political, commercial and military reaso ...
.
Travelling down via
Verona
Verona ( , ; vec, Verona or ) is a city on the Adige River in Veneto, Italy, with 258,031 inhabitants. It is one of the seven provincial capitals of the region. It is the largest city municipality in the region and the second largest in nor ...
,
Modena
Modena (, , ; egl, label=Emilian language#Dialects, Modenese, Mòdna ; ett, Mutna; la, Mutina) is a city and ''comune'' (municipality) on the south side of the Po Valley, in the Province of Modena in the Emilia-Romagna region of northern I ...
, and
Bologna
Bologna (, , ; egl, label=Emilian language, Emilian, Bulåggna ; lat, Bononia) is the capital and largest city of the Emilia-Romagna region in Northern Italy. It is the seventh most populous city in Italy with about 400,000 inhabitants and 1 ...
, he eventually arrived at
Milan
Milan ( , , Lombard language, Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the List of cities in Italy, second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4  ...
where he received the
Iron Crown of Lombardy and the title of
King of Italy in 1208. He was met at
Viterbo by Pope Innocent and was taken to
St. Peter's Basilica, where he was crowned emperor by Pope Innocent on 4 October 1209, before rioting broke out in Rome, forcing Otto to abandon the city.
Conflict with Innocent III
Not content with his successes so far, Innocent also obtained from Otto further written concessions to the Papal See, including allowing all elections of German bishops to be conducted according to Church ordinances, and not to prevent any appeals to Rome.
He also promised to hand over to the Church all income from any vacant sees which had been flowing into the imperial treasury.
After abandoning Rome, Otto marched north, reaching
Pisa
Pisa ( , or ) is a city and ''comune'' in Tuscany, central Italy, straddling the Arno just before it empties into the Ligurian Sea. It is the capital city of the Province of Pisa. Although Pisa is known worldwide for its leaning tower, the ...
by 20 November. Here, probably advised by Peter of Celano and
Dipold, Count of Acerra, he was convinced to abandon his earlier promises. Otto immediately worked to restore imperial power in Italy. After his consecration by the pope, he promised to restore the lands bequeathed to the church by the countess
Matilda of Tuscany nearly a century before, and not to move against
Frederick,
King of Sicily.
[Dunham, pg. 196] He quickly broke all his promises.
He threw out the papal troops from Ancona and Spoleto, reclaiming the territory as imperial fiefs. He then demanded that Frederick of Sicily do homage for the duchies of
Calabria and
Apulia, and when Frederick refused to appear, Otto declared those fiefs forfeited.
Otto then marched on Rome and commanded Innocent to annul the
Concordat of Worms and to recognise the imperial crown's right to make nominations to all vacant benefices.
Such actions infuriated Innocent, who promptly excommunicated Otto on 18 November 1210.
[Abulafia, pg. 127] Subsequently, he tried to conquer
Sicily
(man) it, Siciliana (woman)
, population_note =
, population_blank1_title =
, population_blank1 =
, demographics_type1 = Ethnicity
, demographics1_footnotes =
, demographi ...
,
[Abulafia, pg. 131] which was held by the Staufen king
Frederick, under the guardianship of Innocent III. Parallel to this, the German nobility by this time was growing ever more frustrated with Otto. They felt that instead of wasting his time in Italy and playing power politics with the pope, it was his first duty to defend the northern provinces of the empire against
Valdemar II of Denmark, who had taken advantage of Otto's distractions by invading the northern provinces of the empire and possessing the whole
Baltic coast from
Holstein
Holstein (; nds, label= Northern Low Saxon, Holsteen; da, Holsten; Latin and historical en, Holsatia, italic=yes) is the region between the rivers Elbe and Eider. It is the southern half of Schleswig-Holstein, the northernmost state of Germ ...
to
Livonia
Livonia ( liv, Līvõmō, et, Liivimaa, fi, Liivinmaa, German and Scandinavian languages: ', archaic German: ''Liefland'', nl, Lijfland, Latvian and lt, Livonija, pl, Inflanty, archaic English: ''Livland'', ''Liwlandia''; russian: Ли ...
.
So while Otto was in southern Italy, several princes of the empire, including the archbishops of
Mainz
Mainz () is the capital and largest city of Rhineland-Palatinate, Germany.
Mainz is on the left bank of the Rhine, opposite to the place that the Main joins the Rhine. Downstream of the confluence, the Rhine flows to the north-west, with Ma ...
and
Magdeburg
Magdeburg (; nds, label= Low Saxon, Meideborg ) is the capital and second-largest city of the German state Saxony-Anhalt. The city is situated at the Elbe river.
Otto I, the first Holy Roman Emperor and founder of the Archdiocese of Mag ...
,
[Abulafia, pg. 381] at the instigation of King
Philip II of France
Philip II (21 August 1165 – 14 July 1223), byname Philip Augustus (french: Philippe Auguste), was King of France from 1180 to 1223. His predecessors had been known as kings of the Franks, but from 1190 onward, Philip became the first French m ...
and with the consent of the pope, elected Frederick King of the Romans at the
Diet of Nuremberg in 1211.
Otto's ambassadors from
Milan
Milan ( , , Lombard language, Lombard: ; it, Milano ) is a city in northern Italy, capital of Lombardy, and the List of cities in Italy, second-most populous city proper in Italy after Rome. The city proper has a population of about 1.4  ...
appeared before the
Fourth Lateran Council
The Fourth Council of the Lateran or Lateran IV was convoked by Pope Innocent III in April 1213 and opened at the Lateran Palace in Rome on 11 November 1215. Due to the great length of time between the Council's convocation and meeting, man ...
, pleading the case for his
excommunication
Excommunication is an institutional act of religious censure used to end or at least regulate the communion of a member of a congregation with other members of the religious institution who are in normal communion with each other. The purpose ...
to be lifted.
Although he claimed he had repented for his offences and declared his willingness to be obedient to the
Pope
The pope ( la, papa, from el, πάππας, translit=pappas, 'father'), also known as supreme pontiff ( or ), Roman pontiff () or sovereign pontiff, is the bishop of Rome (or historically the patriarch of Rome), head of the worldwide Cathol ...
in all things, Innocent III had already recognised Frederick as emperor-elect.
Otto returned to Germany to deal with the situation, hopeful of salvaging something from the looming disaster.
He found most of the German princes and bishops had turned against him, and that Frederick, who had made his way up the Italian peninsula, had avoided Otto's men who were guarding the passes through the
Alps
The Alps () ; german: Alpen ; it, Alpi ; rm, Alps ; sl, Alpe . are the highest and most extensive mountain range system that lies entirely in Europe, stretching approximately across seven Alpine countries (from west to east): France, ...
and had arrived at
Constance.
Otto soon discovered that after Beatrix died in the summer of 1212 and Frederick arrived in Germany with his army in September 1212, most of his former Staufen supporters deserted him for Frederick, forcing Otto to withdraw to Cologne.
On 5 December 1212, Frederick was elected king for a second time by a majority of the princes.
[Abulafia, pg. 382]
The support that Philip II of France was giving to Frederick forced King John of England to throw his weight behind his nephew, Otto. The destruction of the French fleet in 1213 by the English saw John begin preparations for an invasion of France; in this, Otto saw a way of both destroying Frederick's French support as well as bolstering his own prestige.
He agreed to join John in the invasion and in February 1214, as John advanced from the
Loire
The Loire (, also ; ; oc, Léger, ; la, Liger) is the longest river in France and the 171st longest in the world. With a length of , it drains , more than a fifth of France's land, while its average discharge is only half that of the Rhôn ...
, Otto, together with the Count of Flanders, was supposed to make a simultaneous attack from Flanders. Unfortunately, the three armies could not coordinate their efforts effectively. It was not until John, who had been disappointed in his hope for an easy victory after being driven from
Roche-au-Moine, had retreated to his transports that the Imperial Army, with Otto at its head, assembled in the
Low Countries
The term Low Countries, also known as the Low Lands ( nl, de Lage Landen, french: les Pays-Bas, lb, déi Niddereg Lännereien) and historically called the Netherlands ( nl, de Nederlanden), Flanders, or Belgica, is a coastal lowland region in N ...
.
On 27 July 1214, the opposing armies suddenly discovered they were in close proximity to each other, on the banks of the little river Marque (a tributary of the river Deûle), near the Bridge of Bouvines. Philip's army numbered some 15,000, while the allied forces possessed around 25,000 troops; the armies clashed at the
Battle of Bouvines. It was a tight battle, but it was lost when Otto was carried off the field by his wounded and terrified horse, causing his forces to abandon the field. It is said that Philip II had sent to Frederick the Imperial Eagle, which Otto had left lying on the battlefield.
Because Otto was forced again to withdraw to his private possessions around Brunswick, this defeat allowed Frederick to take Aachen and Cologne,
and so Otto was deposed in 1215. Absolved from his ex-communication, he died of disease at
Harzburg castle on 19 May 1218, requesting that he be mortally
expiated in the atonement of his sins. Historian
Kantorowicz described the death as ''gruesome'': "deposed, dethroned, he was flung full length on the ground by the Abbot, confessing his sins, while the reluctant priests beat him bloodily to death with rods. Such was the end of the first and last Welf Emperor."
He is entombed in
Brunswick Cathedral.
Family

Otto was
related to every other King of Germany. He married twice:
# 1209 or 1212 to
Beatrice of Swabia, daughter of the German King
Philip of Swabia and
Irene Angelina.
# 19 May 1214, in
Aachen to
Maria of Brabant, daughter of
Henry I, Duke of Brabant, and
Matilda of Boulogne.
Neither marriage produced any children.
Notes
References
* Abulafia, David, ''The New Cambridge Medieval History, Vol. V: c. 1198 – c. 1300'', Cambridge University Press, 1999
* Bryce, James, ''The Holy Roman Empire'', 1913
* Comyn, Robert. ''History of the Western Empire, from its Restoration by Charlemagne to the Accession of Charles V, Vol. I''. 1851
* Dunham, S. A., ''A History of the Germanic Empire, Vol. I'', 1835
*
*
*
*
*
External links
*
*
Literature about Otto IVin the OPAC of the ''Regesta Imperii''
* Deed by Otto IV for Salem Abbey, 14 July 1209,
Testament of Emperor Otto IV dated 1218at kulturerbe.niedersachsen.de
, -
{{DEFAULTSORT:Otto 04, Holy Roman Emperor
1175 births
1218 deaths
13th-century Holy Roman Emperors
12th-century Kings of the Romans
People temporarily excommunicated by the Catholic Church
House of Welf
Deaths by beating in Europe
Burials at Brunswick Cathedral