Not possible to say if the RN man or the RAF man. Without any more info from ADRC it is not possible to say. It appears that the RN man was not an officer. Which would lead one to the RAF man
1899 Jun 3 Born Cork, Ireland (exact date from RAF record)
1901 census at 4 Saint Mary's Villas, Cork
1911 census at 7 Bath Terrace Gosforth Newcastle on Tyne
1918 May 9. "Fit as pilot" Officer Cadet in RAF. His rank is never increased from "Cadet" so one assumes he was never commissioned - there is no record.
1918 Jul 7 Discharged from RAF. His record has very little on it, but he does not appear to have been commissioned
1921 Jul 2. Accepted in Ireland. Joined ADRIC with service no 2091. Posted to Depot Coy.
1922 Jan 27. discharged on demobilisation of ADRIC
1926 Sep 25 Married in London to Evelyn Elsie McCarthy. Witnessed by his father, Lionel E Buckell
1927 Dec 30. Leaves UK with his wife for Australia
1969 Jul/Sep died age 70, Surrey N.W. (it links back to correct date of birth)
1900 Jan 5. Born Greenwich, London
1901 census at 12, Mount Nod Square, Greenwich
1911 census at 53 Elverson Road Greenwich S E
RN Service Record
1923 Apr 4. Died Winchman Hill