Born at Allahabad, India, of Canadian parents who were missionaries, on 24 January 1905, he won a scholarship to the University of Saskatchewan, graduated with silver and gold medals, and was a demonstrator of physiology. He won a Rhodes scholarship to St John's College, Oxford, where he graduated with first class honours in physiology, and also played hockey for the University. He received his clinical training at Guy's Hospital, and held resident posts at the Dudley Road Hospital, Birmingham, the Royal Victoria, Montreal, and the Humber Clinic, Cornerbrook, Newfoundland. Returning to England he was surgical registrar at the Radcliffe Infirmary, Oxford, and at Guy's. He was appointed Associate Professor in 1936 and later became Professor of Surgery at the University of Western Ontario, London, Canada, where he practised for the rest of his life. He became Chief of the Thoracic Surgery departments at the Victoria Hospital and the War Memorial Children's Hospital, and was consulting thoracic surgeon to St Joseph's Hospital and the Beck Memorial Sanatorium. Grace was an excellent teacher, popular with his colleagues, students and patients. He excelled in all he touched, and was a keen shot and fisherman, fond also of golf and curling. He was a good photographer, and much interested in politics and religion, cherishing the simple faith learned from his parents. He married in 1936 Mary Kathleen Disney of Northampton, who survived him with their eight children; one daughter, Dr Noelle Grace, was a resident at the Royal Victorian Hospital, Montreal in 1964. Grace died at London, Western Ontario after two years illness on 7 September 1964, aged 59. Publication: Ureamia. *Guy's Hospital Gaz* 1932