Albert Frank (Francis) Knapp was born in 1887 in Coombe, Hampshire, the son of Albert and Jeanette Knapp.
On the 1891 Census, the family were living at Cannon Dell, West Tisted, Hants where his father was a gamekeeper. They had joined his grandparents at Highclere, Hants by the 1901 Census. His grandfather was an Assistant Overseer and Rate Collector and his father was gamekeeper (presumably on the Highclere estate). [He is identified as Francis on the census, rather than Albert or Frank.]
He married Annie Hoare on 28 February 1911 in Cobham, Surrey. On the 1911 Census, the newly married couple are living at the Keeper's Cottage at Painshill, Cobham, Surrey, where he was working as a Gamekeeper on the Estate. Later the same year they had a son Albert James and another son Walter born in 1913.
[Sadly both boys died within days of each other in May 1918.]