Ealdgyth combines the Old English eald (old) and gȳð (war). Ealdgyth of Mercia (c. 1057-after 1066) was the last Anglo-Saxon Queen of England — wife of King Harold Godwinson, killed at Hastings. She was pregnant with his posthumous son when the Norman Conquest came, fleeing to Chester then disappearing from history.
Distinct from Eadgyth (Edith of Wessex).
Ealdgyth reduces to one — the number of last Saxon queen.