The crusade of 1101 failed completely against Seljuk ambushes

Evidence

The Crusade of 1101, launched to support and defend the new crusader states in the Levant, was an unmitigated failure. Welf, Thiemo, and their men were ambushed by the Seljuks near Ereghli. Many died; many (including Thiemo) were taken captive; Welf managed to escape. — John V. Tolan, Saracens, 1667