[5] During 1135, he was repeatedly called to King Henry I's court, but due to the fate of his father, William was fully aware of the dangers of visiting and chose to decline the invitation.

[2] With the on-going civil war between Matilda, Geoffrey's wife, and her cousin, Stephen of Blois, William's lands were placed under interdict by bishop of Sées.

[8] Following his son, Guy's death on crusade in 1147, William wrote to his grandson, newly appointed count John, urging him, for the sake of his father's soul, to return property to the priory of Abbeville.

[9] William and John's rebellion, largely ineffective and short-lived, cost them their castles of Alençon and La Roche Mabille, which Henry took through mere intimidation.

[9] William, in particular, lost lands in both England and Normandy, which represented the political shift that had occurred as a result of Henry’s growing influence.