Born at Ashford, Kent, 5 December 1869 the second son of Joseph Ingall, chemist and druggist, and Julia Williams, his wife. He was educated at Ashford Grammar School and the London Hospital, where he served as house surgeon. During the South African war he was on active service as a civil medical officer with the field force and won the Queen's and King's medals. He served again in the RAMC during the war of 1914-18. Ingall was for a time assistant medical officer at the Brook Hospital, Shooter's Hill under the Metropolitan Asylums Board, and was a member of the Royal Medico-psychological Association. For the greater part of his career he was deputy Medical Officer of Health for Southend-on-Sea, Essex. After retiring he returned to Ashford, where he died unmarried on 22 June 1951 at 36 Albert Road.