Mary Stewart
Mary Florence Elinor Stewart (born 1916) is a popular English novelist, best known for her series about Merlin, which straddles the boundary between the historical novel and the fantasy genre.
Mythopoeic Fantasy Award for Adult Literature: Best Novel winner (1974).
Keeping watch over the young Arthur Pendragon, the prince and prophet Merlin Ambrosius is haunted by dreams of the magical sword Caliburn, which has been hidden for centuries. When Uther Pendragon is killed in battle, the time of destiny is at hand, and Arthur must claim the fabled sword to become the true High King of Britain.