John Henry Abbott was born in 1884 in Watford, Herts, youngest son of George and Lydia Abbott of Watford. He was Baptised on 9th November 1884, in the Parish of Leavesden, Herts. The family moved from Watford, firstly to 101 Villiers Road in Oxhey and then to 46 Upper Paddock Road, Oxhey. John like his father, worked as a General Labourer.
John Henry Abbott married Gertrude M. Ditcham in Norwich, Norfolk, in 1912, is believed they had two children, Jack and Stanley Abbott.