In 1231 Robert initiated the process of canonization for one of his 12th-century predecessors, Archbishop Lucas. He entrusted Bulcsú Lád, Bishop of Csanád to conduct an investigation and send his report to Rome. When papal legate Giacomo di Pecorari arrived to Hungary in 1233, he also dealt with the issue, but the protocol was lost and the canonization process postponed. The initiative failed in silence due to the Mongol invasion of 1241.