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, 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