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, Count of Guelders Henry I, Count of Guelders Henry I, Count of Guelders (1117–1182) was Count of Guelders from 1131 until 1182. He was a son of Gerard II of Guelders and Ermgard of Zutphen. In 1138 Hendrik inherited the County of Zutphen from his mother. Hendrik was under tremendous pressure from the Bishopric of Utrecht and the County of Holland, and was forced by Holland to negotiate a treaty with the city of Utrecht; this led to a problematic relation with the Bishop of Utrecht. In 1135 Hendrik married Agnes of Arnstein, daughter of count Louis III of Arnstein. Their daughter Adelaide