However , Baldwin disappeared during a raid by the Seljuk Turks in Anatolia , and was presumably killed .
In 1098 he was sent back to Constantinople with Hugh of Vermandois after the siege of Antioch , to seek assistance from Byzantine emperor Alexius I .
Baldwin disappeared during a raid by the Seljuk Turks in Anatolia , and was presumably killed .
In 1098 he was sent back to Constantinople with Hugh of Vermandois after the siege of Antioch , to seek assistance from Byzantine emperor Alexius I .