Born in 1919, Fitz-Maurice was the younger son of Captain Douglas Frederick Harold FitzMaurice RNAS (died 1937), a great grandson of the 5th Earl, by his marriage to Dorothy Janette, daughter of Captain Robert Dickie, RN.
Born in 1919, Fitz-Maurice was the younger son of Captain Douglas Frederick Harold FitzMaurice RNAS (died 1937), a great grandson of the 5th Earl, through his marriage to Dorothy Janette, daughter of Captain Robert Dickie, RN.