conqueror (n.)youdaoicibaDictYouDict[conqueror 词源字典]
c. 1300, from Anglo-French conquerour, Old French conquereor, from Old French conquerre (see conquer). Another early form was conquestor. William the Conqueror so called from early 12c. in Anglo-Latin: Guillelmus Magus id est conquæstor rex Anglorum.[conqueror etymology, conqueror origin, 英语词源]