Background
He was the oldest son of Count Albert III and his wife Ida of Saxony, the heiress of Laroche. He first married in 1087 Sibylle, a daughter of Count Roger of Château-Porcéan and his wife Ermengarde.
He was the oldest son of Count Albert III and his wife Ida of Saxony, the heiress of Laroche. He first married in 1087 Sibylle, a daughter of Count Roger of Château-Porcéan and his wife Ermengarde.
He was Count jure uxoris of Porcéan from 1097 until his death. From 1102, he was also Count of Namur. In 1121, he founded Floreffe Abbey.