Born in London on 14 May 1862, the second child and elder son of Sydney Jones, FRCS 1856, and Mary Mynie Morris, his wife. Sydney Jones, senior, was at the time of his son's birth assistant surgeon and later became surgeon to St Thomas's Hospital; he performed the first successful gastrostomy in 1875. S H Jones was educated at Dr Barrett's at Carshalton, at Haileybury College, and at St Thomas's Hospital, where he won the Tite, the Musgrove, and other scholarships, and also the Cheselden and the gold Treasurer's medals. He served as house surgeon and as clinical assistant in the ear and skin departments at St Thomas's, and was surgical registrar and anaesthetist at the Great Ormond Street Hospital for Sick Children. He practised at one time at 18 Kendoa Road, Clapham, SW, and later at 23 Mattock Lane, Ealing, W5, and retired to Silver Birch, Stotford, Bedfordshire, where he died on 20 November 1940. Jones had married on 11 November 1908 Leonora Sullivan, who survived him but without children.