Monarchy of the United Kingdom which resulted in a Danish monarchy for one generation. The conquest of England in 1066 by William, Duke of Normandy, was crucial in terms of both political and social change. The new monarch continued the centralisation of power begun in the Anglo-Saxon period, while the Feudal System continued to develop. William was succeeded by two of his sons: William II, then Henry I. Henry made a controversial decision to name his daughter Matilda (his only surviving child) as his heir. Following Henry's death in 1135, one of William I's grandsons, Stephen, laid claim to the throne and took power with
Henry I of Castile I of Portugal. As he was very young, the marriage was not consummated, and it was dissolved in 1216 by Pope Innocent III on grounds of consanguinity. In the same year, Henry became betrothed to his second cousin Sancha, heiress of León. Henry died in Palencia 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 favour of her son Ferdinand III. His body was interred at Las Huelgas monastery in Burgos. Henry I of Castile Henry I of Castile (14 April 1204 – 6