 Complete the following phrase:  In September 1136, Paynels castle at Les Moutiers-Hubert was attacked by Count Geoffrey of Anjou, husband of Empress Matilda. Matilda was the only surviving legitimate child of King Henry I of England, but at Henrys death in 1135, her cousin Stephen of Blois had seized the throne of England and secured Normandy as well. In 1136 Matilda and her husband contested Stephens seizure of both England and Normandy, starting a civil war usually known as 