麥當奴
He came from a well-known family and was a grandson of Judge Edward Mayne and Dean Richard Graves. He was a nephew of Sir Richard Mayne and a first cousin of Admiral Richard Charles Mayne, Chief Justice Sir William Collis Meredith, Edmund Allen Meredith, Sir Richard Graves MacDonnell, Major-General Arthur Robert MacDonnell and Francis Brinkley. His sister married a son of Abraham Colles, and through her he was the uncle of Ladies Ashbourne and Bewley.