Noel Francois Viljoen, son of W.J. Viljoen and his wife Wilhelmina, served in the army in East Africa during World War I (1914-1918) and in 1925 qualified as a veterinarian (MRCVS) in Edinburgh. After returning to South Africa he became a member of the South African Veterinary Medical Association in 1928. He served as Government Veterinary Officer in the Bechuanaland Protectorate (now Botswana) for a few years before being appointed as director of the Bloemfontein abattoir. During his 15 years in this position he obtained a DVSc degree from the University of South Africa in 1937 for a study entitled Cysticercosis in swine and bovines, with special reference to South African conditions. His thesis was also published in the Onderstepoort Journal of Veterinary science. After practising for a number of years in the Eastern Cape he was employed by the People's Dispensary for Sick Animals (PDSA) in Johannesburg. He was survived by his wife, Marjorie E. (formerly Beasley, born Richards), with whom he had one son and one daughter.