In August 1291, Pope Nicholas wrote a letter to Arghun informing him of the plans of Edward I to go on a Crusade to recapture the Holy Land, stating that the Crusade could only be successful with the help of the "powerful arm" of the Mongols. Nicolas repeated an oft-told theme of the Crusader communications to the Mongols, asking Arghun to receive baptism and to march against the Mamluks. However Arghun himself had died on March 10, 1291, and Pope Nicholas IV would die in March 1292, putting an end to their attempts at combined action.