A Queensland probate search shows a probate file for him, dated 15 March 2022. His sister, Geraldine, is the applicant.
He was the son of Reginald Percy BUTLER-FITZGERALD (1896 - 1983), scion of the BUTLER baronets [I, 1628] being descended from the 4th son of the 8th baronet, and Muriel MARTIN (died 1971)