In 1239 he participated in the Barons ' Crusade under Theobald I of Navarre .
In 1239 he was taken prisoner during a failed raid led by Henry of Bar at Gaza , during which Henry was killed .
In 1239 he participated in the Barons ' Crusade under Theobald I of Navarre and was taken prisoner during a failed raid led by Henry of Bar at Gaza , during which Henry was killed .