Battle of Wilton Boulogne to England and claimed the throne. He quickly gained the support of London's magnates and the church, and seized control of the treasury at Winchester. He was crowned king on 22 December 1135. By 1138, Matilda had gathered enough support to challenge Stephen for the throne. Her supporters were led by her half-brother Robert Earl of Gloucester. The ensuing civil war lasted until 6 November 1153 when, by the Treaty of Wallingford, Stephen recognised Matilda's son Henry as heir to the throne. By 1142 both sides had become cautious of risking open battle, and the civil war became a
Henry I the Long, Margrave of the Nordmark Henry I the Long, Margrave of the Nordmark Henry I the Long (c.1065 - died 27 June 1087), Margrave of the Nordmark, also Count of Stade (as Henry III), son of Lothair Udo II, Margrave of the Nordmark, and Oda of Werl, daughter of Herman III, Count of Werl, and Richenza of Swabia. Henry married Eupraxia of Kiev, daughter of Vsevolod I, Grand Prince of Kiev, and his second wife Anna. There were no children as a result of this marriage, and Eupraxia, widowed, married next Henry IV, then King of Saxony, who became Holy Roman Emperor. Raffensperger suggests that