Süleyman Çelebi died in 1410 and his successor, Musa Çelebi, renewed the war on Bodonitsa almost immediately. In early spring, Bodonitsa was besieged, Jacob resisted the attack.
Nevertheless, he was killed by traitors while defending Thermopylae. His sons, including his eldest and successor, Nicholas II, continued to hold the castle until Venice could send relief, but the relief was too late in coming and the citadel fell and Nicholas was captured.