Born in 1919 at Mountain Ash, Glamorgan, he was educated at Repton, Gonville and Caius College, Cambridge and the Middlesex Hospital. After qualification he served as a Captain and graded surgeon in the RAMC. Later he was resident medical officer at Tindal House Emergency Hospital in Aylesbury an

John Walter Jackson was born on 14 November 1921 at Ballyconnell, County Cavan, Ireland, the son of Reverend John Herbert Jackson, BD, a Canon of St Patrick's Cathedral, Dublin, and Dora Grace (née Middleton). His early education was at Portora Royal School, Enniskillen, before he entered Trinity Co