Edgar \e-dgar, ed-gar\ as a boy's name is pronounced ED-gar. It is of Old English origin, and the meaning of Edgar is "wealthy spear". A royal name in Anglo-Saxon England. Name of an English king and saint, Edgar the Peaceful (10th century). Literary: in Shakespeare's "King Lear", Lear's son is called Edgar. Edgardo is the Spanish form. Poet Edgar Allan Poe; puppeteer Edgar Bergen; artist Edgar D?s; author Edgar Rice Burroughs.