He appears on the first crusade at Constantinople as one of Godfrey's men; and he helped Tancred to occupy Bethlehem in June 1099.
Tancred became guardian of Edessa during Baldwin's captivity, and did not trouble himself greatly to procure his release.
Baldwin, however, recovered his liberty at the beginning of 11°8, and at once entered upon a struggle with Tancred for the recovery of Edessa.
In September 1108 he regained his principality; but the struggle with Tancred continued, until it was composed by Baldwin in 1109.
In 1126 he came from Apulia to Antioch (which, since the fall of Roger, the successor of Tancred, in 1119, had been under the regency of Baldwin II.); and in 1127 he married Alice, the younger daughter of Baldwin.