Born in 1866, he was educated at Aberdeen University, the Middlesex and King's College Hospitals. He was a house surgeon at the Gloucestershire General Infirmary and Eye Hospital and then ophthalmic clinical assistant at the Middlesex Hospital. He settled in practice at Lewes, Sussex and was appo

Born on 23 October 1872, the son of the Rev John Ferguson MacCallan MA, Vicar of New Basford, Notts, and Elizabeth his wife, daughter of Thomas Danks, chairman of the Nottingham and Nottinghamshire Bank, MacCallan was educated at Nottingham High School, Charterhouse School, Christ's College, Cambrid