Raimbaut's date of birth is not known. According to two sources, Albert of Aix and William of Tyre (neither of them eye-witnesses), he joined the First Crusade, presumably setting out in 1096; his name is linked with those of Adhemar of Le Puy and Robert II of Flanders, and he is said to have been present at the siege of Antioch in 1098. He remained in Palestine and died there, probably in 1121.
He married, but his wife's name is not known. No sons survived him. His daughter, Tiburge, in her father's prolonged absence, was being named "countess of Orange" as early as 1115. She married William of Aumelas, second son of William VI of Montpellier; she was still alive in 1136. Their son (Raimbaut's only grandson) was the troubadour Raimbaut of Orange, and he inherited the territories of Aumelas and Orange.
A statue of Raimbaut, count of Orange, was erected in the main square at Orange in 1846.