Queen Mother - 'King Mother'

'King Mother'

Diana, Princess of Wales, reportedly once suggested to journalist Andrew Morton (author of Diana: Her True Story) that when her son, Prince William, became king, she would be known as 'King Mother'. No such designation has ever officially existed, nor is there independent evidence that such terminology was ever considered. Queen mother means "queen who is mother to the current monarch", not "mother of the queen"; "king mother" is a contradiction in terms.

However, of note, and possibly Diana's basis for the idea, is the style My Lady The King's Mother, held by Margaret Beaufort during the reign of her son, Henry VII of England.