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 the Long, Margrave of the Nordmark Henry's motivation in marrying Eupraxia was to bring Saxony closer to Kiev. In fact, the marriage may have been arranged by Oda of Stade, daughter of Lothair Udo I, Margrave of the Nordmark, who had married Sviatoslav II, Grand Prince of Kiev. Oda is identified as a relative of Henry’s father Lothair Udo II as well as a niece of Henry III, Holy Roman Emperor, and Pope Leo IX. Upon his death, Henry was succeeded as margrave and count by his brother Lothair Udo III. Henry I the Long, Margrave of the Nordmark Henry I the Long (c.1065 - died