Henry I of Castile was king of Castile

Kingdom of Castile

Kingdom of Castile was one of the medieval kingdoms of the Iberian Peninsula. It emerged as a political autonomous entity in the 9th century. It was called County of Castile and was held in vassalage from the Kingdom of León. Its name comes from the host of castles constructed in the region...

. He was the son of Alfonso VIII of Castile

Alfonso VIII of Castile

Alfonso VIII , called the Noble or el de las Navas, was the King of Castile from 1158 to his death and King of Toledo. He is most remembered for his part in the Reconquista and the downfall of the Almohad Caliphate...

 and his wife Eleanor Plantagenet

Leonora of England

Eleanor of England was Queen of Castile and Toledo as wife of Alfonso VIII of Castile. She was a daughter of Henry II of England and his wife, Duchess Eleanor of Aquitaine.-Early life:...

, (daughter of Henry II of England

Henry II of England

Henry II ruled as King of England , Count of Anjou, Count of Maine, Duke of Normandy, Duke of Aquitaine, Duke of Gascony, Count of Nantes, Lord of Ireland and, at various times, controlled parts of Wales, Scotland and western France. Henry, the great-grandson of William the Conqueror, was the...

 and Eleanor of Aquitaine

Eleanor of Aquitaine

Eleanor of Aquitaine was one of the wealthiest and most powerful women in Western Europe during the High Middle Ages. As well as being Duchess of Aquitaine in her own right, she was queen consort of France and of England...

).

In 1211, Henry became heir to the throne when his older brother Ferdinand suddenly died.

When his father died, in 1214, Henry was just 10 years old, so the regency was assumed by Henry's older sister Berengaria of Castile, wife of Alfonso IX of Leon

Alfonso IX of Leon

Alfonso IX was king of León and Galicia from the death of his father Ferdinand II in 1188 until his own death...

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In 1215, Henry married Mafalda of Portugal

Mafalda of Portugal

Infanta Mafalda of Portugal was a Portuguese infanta , later Queen consort of Castile for a brief period. She was the second youngest daughter of King Sancho I of Portugal and Dulce of Aragon....

, daughter of Sancho I of Portugal

Sancho I of Portugal

Sancho I , nicknamed the Populator , second monarch of Portugal, was born on 11 November 1154 in Coimbra and died on 26 March 1212 in the same city. He was the second but only surviving legitimate son and fourth child of Afonso I of Portugal by his wife, Maud of Savoy. Sancho succeeded his father...

. As he was very young, the marriage was not consummated, and it was dissolved in 1216.

Henry I died in Palencia

Palencia

Palencia is a city south of Tierra de Campos, in north-northwest Spain, the capital of the province of Palencia in the autonomous community of Castile-Leon...

 in 1217 at the age of 13, killed by a tile coming off a roof. His sister Berengaria succeeded him, before renouncing the throne in favor of her son Ferdinand III

Ferdinand III of Castile

Saint Ferdinand III, T.O.S.F., was the King of Castile from 1217 and León from 1230. He was the son of Alfonso IX of León and Berenguela of Castile. Through his second marriage he was also Count of Aumale. He finished the work done by his maternal grandfather Alfonso VIII and consolidated the...

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Ancestry