I do not think his name was Frank D'Alroy. He says he was born Australia, and probably was. But impossible to find who he really was. He enlisted in KEH as Frank D'Alroy in 1915, and used Franl D'Alroy until 1923. Nothing on him before or after those dates.
1891 Dec 24. born West Coburg, Australia . Near Melbourne
1915 Oct 18 enlists #1822 in King Edward Horse
1916 Apr Involved in Easter Rising
1917 Mar 28 admitted 39 CCS with revolver wound to the leg (self inflicted)
1917 Jun 12 Admitted 2 General Hospital - Dementia
1917 Jul 14 transfers 39 Genaral Hospital
1918 Apr 11 discharged SWB
1918 Jul 24 Leaves UK for Grand Bassa, Liberia. He is a Traders Assistant
1919 Aug 29 Arrives UK from Cape Palmas (Liberia) . He is a traders assistant. He boarded the ship on 6 Aug
1919 Nov gets a seaman's card
1920 Oct 12. enlisted as # 74179 in RIC. Electrical Engineer & ex-Soldier
1920 Nov 1 posted Kerry
1921 Apr 10 Was on patrol with 2 other RIC constables in plain clothes in Tralee. They were involved in the arrest and subsequent death of William McCarthy
1922 Feb 6 Disbanded
1922 Mar 28 enlists in Palestine Gendarmerie
1922 Apr 30 Dismissed from Gendarmerie. He was dismissed for 'gross misconduct' on the sailing out & deported back to the UK
1922 Jul 22 arrives Canada
1922 Jul 27 Arrives UK from Canada
1923 Nov 30 Arrives UK from Canada