Robert Curthose ( c. 1054 - 3 February 1134 ) , sometimes styled Robert II or Robert III , was the Duke of Normandy from 1087 until 1106 and an unsuccessful claimant to the throne of the Kingdom of England .
Robert Curthose ( c. 1054-1134 ) , sometimes styled Robert II or Robert III , was the Duke of Normandy from 1087 until 1106 .