TheHouse of Burgundy,^[1] also known as theCastilian House of Ivrea,^{[citation needed]} is a cadet branch of theHouse of Ivrea descended fromRaymond of Burgundy. Raymond marriedUrraca, the eldest legitimate daughter ofAlfonso VI of León and Castile of theHouse of Jiménez. Two years after Raymond's death, Urraca succeeded her father and became queen of Castile and León; Urraca's and Raymond's offspring in the legitimate line ruled the kingdom from 1126 until the death ofPeter of Castile in 1369, while their descendants in an illegitimate line, theHouse of Trastámara, would rule Castile and Aragón into the 16th century.

Raymond was the fourth son ofWilliam I, Count of Burgundy (from the House of Ivrea) and arrived in the Iberian peninsula probably in 1086 with the army ofOdo I, Duke of Burgundy, who besieged the cityTudela, Navarre. In April 1087 the army abandoned the siege and returned home, but Odo, Raymond andHenry of Burgundy (Raymond's cousin) went west at the court of Alfonso VI king of Castile and León. There, Odo arranged the marriage of king's first daughter, Urraca, to Raymond in 1087; the couple received the county of Galicia as dowry.^[2] In 1093 Alfonso VI married an illegitimate daughterTeresa to Henry and gave them the county of Portugal, which evolved to a kingdom.^[3] In 1107 Raymond died, followed the next year bySancho, the king's only son. Now his presumptive heiress, Urraca was married toAlfonso I of Navarre and Aragón, who was promised the kingdom to the exclusion of Urraca's son by Raymond. The couple proved incompatible, and following Alfonso VI's death in 1109, Urraca reigned as queen while resisting efforts by both her husband and her son by Raymond to take the crown. The latter succeeded on her death, becomingAlfonso VII, first king of Castile and León from the Castilian House of Ivrea.

Alfonso VII partitioned the kingdom to his sons:Sancho III received Castile & Toledo andFerdinand received León & Galicia. The kingdoms remained divided under their sonsAlfonso VIII of Castile andAlfonso IX of León, but in 1197 the latter married the daughter of the former, so following the death of her teenage brother,Henry I of Castile, this kingdom passed to her son by Alfonso IX,Ferdinand III. He permanently reunited the kingdoms on the death of his father and passed them to his own son,Alfonso X.

Alfonso X's eldest sonFerdinand died in 1275 leaving two sons, but the king's second sonSancho claimed to be the new heir. The king preferred Ferdinand's sons, but the nobility supported Sancho and a civil war began. The descendants of Ferdinand form theHouse of la Cerda. Alfonso X died in 1284 and finally his second son succeeded him, as Sancho IV. The grandson of Sancho IV, i.e.Alfonso XI, had legitimate sonPeter of Castile and some illegitimate sons:Henry,Fadrique, etc. Henry attacked Peter with a host of soldiers of fortune in 1366. TheCastilian Civil War followed: Peter was besieged at the fortress ofMontiel. During the negotiations, Peter entered the tent of Henry's envoy, where Henry, which was hidden there, attacked him and killed him. Peter had no legitimate sons, and Henry became the new king as Henry II and was the founder of theHouse of Trastámara. His brother Fadrique became the founder of theHouse of Enríquez.

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  Raymond (House of Ivrea)
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  Alfonso VII the Emperor
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  Ferdinand II of León
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  Alfonso IX of León
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  Ferdinand III the Saint
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  Alfonso X the Wise
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  Sancho IV the Brave
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  Ferdinand IV the Summoned
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  Alfonso XI the Avenger
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  Peter the Cruel/Just

• Portuguese House of Burgundy
• House of Trastámara

• Patxot y Ferrer, Fernando; enLos héroes y las grandezas de la tierra: anales del mundo, formación, revoluciones y guerra de todos los imperios, desde la creación hasta nuestros días. (Tomo VI, Ed. Imprenta de Cervantes, Barcelona, año 1856).

*Royal House* Castilian House of Burgundy Cadet branch of theHouse of Ivrea
Preceded by Jiménez dynasty	Ruling House of the Kingdom of Castile and León 1126 – 1369	Succeeded by House of Trastámara

• Castilian royal houses
• Castilian House of Burgundy

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