Baldwin II was count of Hainaut from 1071 to his death. He was an unsuccessful claimant to the County of Flanders. He disappeared in Anatolia during the First Crusade.

Robert I, known as Robert the Frisian, was count of Flanders from 1071 until his death in 1093. He was a son of Count Baldwin V out of his first marriage, He was the older brother of Count Baldwin VI