Historical Events Dec 3 St Zachary begins his reign as Catholic Pope succeeding Gregory III Dec 10 Pope Zachary elected Famous People Who Died in 741 AD Jun 18 Leo III de Isaurier, Byzantine Emperor (717-41), dies Oct 22 Charles Martel, ruler of the Franks and grandfather of Charlemagne, dies at 63 Nov 28 Syrian Catholic Pope Saint Gregory III 740 AD History by Year 742 AD