Thannipulliara-Chige Perera practised in Colombo, Sri Lanka, as a thoracic surgeon. His sister was deputy Minister of Health. He is thought to have died sometime before July 1976.

Robert Mitchell was born in Longueville, New South Wales, on 13 October 1927. His father, William Robert Mitchell, was an accountant. His mother was Lilian née Coram. He was educated at the Sydney Church of England Grammar School and studied medicine at the University of Sydney. He did junior posts