 His father, E. Shewell-Cooper, was a major in the Royal Artillery and was also the assistant superintendent of the gunpowder factory in Waltham Abbey.From there, the family moved to Blackheath, London, and then to Penarth, Wales.Before the outbreak of World War I, the family set sail on the "Galaka" for South Africa, where they lived in Rondebosch, now a suburb of Cape Town.