Name: Prince Robert II Duke of Normandy 'Curthose' Birth: c. 1051 Father: King William I of England 'The Conqueror' Mother: Princess Matilda Countess of Flanders Would have been: King Robert I of England Probable predecessor: William I Reason not crowned: Divided inheritance (1087) then Usurped (1100) Death: February 1134 (aged 83) Cause: Old age Spouse(s): Sybilla Countess of Conversano (m. 1100 - 1103) Children: Richard William Unknown Daughter Prince William Count of Flanders 'Clito' Notes: He was the eldest son of William the Conqueror and Matilda of Flanders. He was originally betrothed to Margaret of Maine, but she died before anything could take place. Although known to be skilled in combat, he was often reported to be lazy and easily exploited. In 1063, his father made him Count of Maine. He frequently quarrelled with his father and brothers. He began a rebellion against his father in 1077 after he failed to punish his brothers for pranki