Stanley Thomas McCollum was a former President of the Royal College of Surgeons in Ireland. He was born in Athboy, County Meath, on 3 May 1918, where his father, Thomas, was a farmer. His mother was Violet née Roe. From the National School, Athboy, he entered Trinity College, Dublin, where he won the O'Sullivan and Fitzpatrick prizes, and the Hudson scholarship and gold medal of the Adelaide Hospital, Dublin. He did his house jobs at the Adelaide and Dr Steeven's Hospitals, before going to England to serve as a surgical registrar in the Emergency Medical Service at the Hillingdon Hospital, where he worked for Howard Hanley. He returned to Dublin as consultant surgeon to the Adelaide and National Children's Hospital. From 1976 to 1978 he was President of the Royal College of Surgeons in Ireland. He married a Miss Walker in 1951 and they had three sons, the eldest of whom, Peter, became a consultant vascular surgeon in Dundee. He died on 16 March 1997.