He went to fight in the Holy Land at the service of Count Baldwin II of Edessa, in the army of Bohemond of Taranto.
On September 13, 1122, Joscelin and Waleran tried to surprise Belek Ghazi, who traveled from Aleppo to his stronghold of Kharput, but they were captured and imprisoned.
Speculum, 1942 JSTOR 2856610 Grousset, René, L'Empire du Levant : Histoire de la Question d'Orient, Paris, Payot, coll.
Bibliothèque historique, 1949 Grousset, René, Histoire des croisades et du royaume franc de Jérusalem, Vol I.
1095-1130, L'anarchie musulmane, Paris, Perrin, 1934 Runciman, Steven, A History of the Crusades, Volume II: The Kingdom of Jerusalem and the Frankish East, 1100-1187, Cambridge University Press, London, 1952