Born 14 March 1870 at 51 Falkland Road, Kentish Town, NW, the fourth child and second son of Henry Hainworth, civil servant, who at the time of his birth was a principal clerk in the War Office, and Louisa Anne Roberts, his wife. He was educated at a small school, kept by Messrs Bell and Brown at Greenwich, afterwards at Roan School, Greenwich, and finally in Germany. He gained the first entrance scholarship at St Thomas's Hospital, and served the offices of house surgeon, non-resident house physician, and assistant demonstrator of practical surgery before settling in Hull. Here he was house surge in 1895, assistant surgeon 1898, and surgeon to the Royal Infirmary from 1914 to 1930, when he resigned and was elected consulting surgeon. During the war he was surgeon to the St John's VAD Hospital at Hull and was created a Member of the Order of the British Empire in April 1918 for his services. He served on the managing committees of the Hull Royal Infirmary and of the Voluntary Aid Detachment Hospital. He was early elected a Fellow of the Association of Surgeons of Great Britain and Ireland, and was secretary of the local branch of the British Medical Association 1901-07, afterwards becoming the president. He married Charlotte Elizabeth Burkinshaw on 26 June 1906. She survived him, but without children. He died of acute septicaemia on 9 April 1935, at Wolfreton House, Kirk Ella, near Hull, and was buried in Kirk Ella cemetery. Hainworth was a good surgeon and a rapid operator; the nursing staff at the Royal Infirmary used to say "His cases give no trouble to anybody". Publications:- Popliteal aneurism in a female. *Brit med J*. 1898, 2, 153. Homicidal injuries to rectum and vagina. *Lancet*, 1899, 1, 1281.