Hugh Williamson was born in 1885 the son of Andrew Williamson. He entered the Royal Navy in 1900 and was in the Submarine Service, 1906-12. In 1911 he qualified as a pilot and in 1913 transferred to the Naval Air Service. In 1915 he was Personal Assistant to the Director of Air Services and in 1916 Air Adviser to Admiralty Staff. In 1918 he transferred to the RAF and was appointed to command No. 18 Group RAF In 1919 he was seconded to the Admiralty to write the Manual of Maritime Air Operations. In 1928 Williamson retired from the RAF and rejoined in 1939 when he was in command of RAF Station Calshot and in 1941 of Pembroke Dock Air Station. He went to the Air Ministry in 1943 and reverted to the Retired List the same year. Williamson died in 1979.