Roger I of Tosny Fécamp Abbey were installed. This monastery was one of the first baronial foundations in Normandy The foundation charter reveals that the lord of Tosny gave it a small possession around Conches and his forest. In 1035, Robert I's death began a troubled period in the duchy of Normandy. Civil wars multiplied and Roger (whose relations with his neighbours was already argumentative) was one of the main players in them. According to the Norman chroniclers, the lord of Tosny refused to serve the new duke, the future William the Conqueror, due to his being a bastard. He especially took advantage of
William V, Duke of Aquitaine William V, Duke of Aquitaine William the Great (; 969 – 31 January 1030) was duke of Aquitaine (as ) and count of Poitou (as or III) from 990 until his death. Upon the death of the emperor Henry II, he was offered the kingdom of Italy but eventually declined to contest the title against Conrad II. He was the son and successor of William IV by his wife Emma of Blois, daughter of Theobald I of Blois. He seems to have taken after his formidable mother, who ruled Aquitaine as regent until 1004. He was a friend to Bishop