William, Count of Mortain

Wilhelm ( † after 1140 ) was a Norman and Count of Mortain and Earl of Cornwall out of the house Conteville. He was a son of Count Robert of Mortain and Mathilde de Montgomery, his uncle was William the Conqueror.

William succeeded his father in 1090, who died in his Norman and English possessions. He supported the 1101 accession of Henry I. Beauclerc in the hope of him to get the county of Kent, who had once belonged to his uncle, Bishop Odo of Bayeux. The new king made this request back but William and offered instead a marriage with the Scottish Princess Mary, who was a sister of Queen Edith / Matilda. Wilhelm beat this offer and moved to Normandy to the enemy with the king elder brother, Duke Robert shorts, which cost him the possession of Cornwall the page. In 1106 Henry Beauclerc attacked the Normandy and besieged this William Castle Tinchebray. In the relief attempt Duke Roberts came on September 22, the Battle of Tinchebray, in which the King of England triumphed and fell as the Duke Wilhelm in his captivity.

Henry of Huntington reported that William was blinded to the king's order in secret. Which arose in the 15th century annals of the monastery of Bermondsey clunizianischen report that William was joined in 1140 their monastic community as a monk. Maybe he was by King Stephen, the way to 1113 by Henry I Beauclerc the county of Mortain had been given, released from his imprisonment and has been recommended to the abbey to which he had good contacts.

Wilhelm had supported the founding of the Abbey Blanche in Mortain by Adeline, the sister of St. Vitalis, founder of the Abbey of Savigny.