Arthur Espie Porritt was born in Wanganui, New Zealand, the elder son of E E Porritt, VD, MD, FRCS, and of Ivy Elizabeth, née Mackenzie, whose father was also a medical practitioner. After education at Wanganui Collegiate School and Otago University, where he had an outstanding athletic record, he s

Harold Strang Taylor-Young was born on 3 March 1902. He was the second son of Hugh Corbett Taylor, a gynaecologist in Sydney, Australia, and his wife Annie Rankin, née Strang. Taylor-Young noted on his CV form that his father "never legally hyphenated his name", but that he did in 1930. He came t

Alfred Charles Fisher was born on 26 June 1905 in Lurgan, Co Armagh. Both his father and uncle were physicians. When five months old he went with his parents to Northern Rhodesia; en route he was carried over the girders of the uncompleted Victoria Falls bridge before the roadway was put on. He was

Henry Hamilton Stewart was born on 23 August 1904, the son of H A Stewart, a practitioner at Thornton, Bradford. He was educated at Bradford Grammar School, King's College Cambridge and St Thomas's Hospital. At Cambridge he was placed in the first class in the Natural Sciences Tripos of 1925. At St