1900 Born Homerton, Hackeny, London
1901 census at 84, Wick Road, Hackney
1911 census at 63 Wich Road, Homerton N E
1916 May 27 Attested to ASC
1916 Jul 8 . Discharged - mistatement of age
1921 May 18. Died Son of John T. Harsant, of 4, Bushby Rd., Homerton, London
Buried Bunbeg, Church of Ireland, Cavan. ifleman (6908830'), 2nd Battalion, Rifle Brigade Other Regiment: Died on 18th May 1921, aged N/K Location/Cause of Death: Died at Crolly, County Donegal (Accidental shooting) Plot Reference: Near East Boundary. Memorial Type: Regimental Family & Address Details: Son of John T. Harsant of 4 Bushby Road, Homerton, London.
I cannot find him on GRO