Born 17 August 1879 at Woburn Square, London, WC, the fifth child and second son of Spencer Dunn, chemical manufacturer, and his wife, *née* Law. He was educated at the Cholmely School, Highgate, and began life as a barrister, being called to the Bar from Lincoln's Inn in 1912, but retired during the war, when he qualified as a medical man from St Bartholomew's Hospital, and acted as temporary surgeon in the Royal Navy from 1916 to 1919, serving at Archangel. He became medical superintendent of the Kensington Hospital and on resigning the post he settled at St Breward, Bodmin, Cornwall, moving afterwards to 16 Adamson Road, London, NW3. He married on 19 August 1923 Eva Isabel Jump, who survived him with one son. He died suddenly at Tiverton, Devon on 7 February 1934.