Definitions of Edgar:

• noun:   the younger brother of Edwy who became king of Northumbria when it renounced Edwy; on Edwy's death he succeeded to the throne of England (944-975)
• name:  A male given name (common: 1 in 1250 males; popularity rank in the U.S.: #209)
• name:  A surname (rare: 1 in 25000 families; popularity rank in the U.S.: #3167)