Born 19 July 1891, the third and youngest son of Peter Dobson Hayes of Stockport. He was educated at Manchester before entering the Middlesex Hospital Medical School. His student days were broken by the outbreak of war and he served in the Royal Field Artillery from 10 September 1914 till 12 August 1916, with the rank of 2nd lieutenant, in the 17th Lancashire Battery. He then resumed his medical training and after qualifying held a temporary commission as captain in the Indian Medical Service from 7 October 1918 to 24 March 1920. On 30 July 1921 he received substantive rank as captain with precedence from 9 March 1921, and was promoted major on 9 September 1929, and subsequently lieutenant-colonel. At the time of his death Hayes had been serving for several years as professor of obstetrics and gynaecology, originally professor of midwifery, at the King Edward Medical College, Lahore; he was also medical superintendent of the Lady Willingdon Hospital there. He was created OBE in the civil division on New Year's Day 1941. Hayes married on 7 March 1924 Sybil Maud Hudson, who survived him with two sons. Mrs Hayes was a sister of Rupert Vaughan Hudson, FRCS. He died suddenly on 11 December 1944 at Raceview, Lahore, Punjab, aged 53. Publications:- Treatment of hepatic abscesses. *Ind med Gaz*. 1927, 62, 13. Present day methods of sterilisation of dressings. *Brit med J*. 1937, 1, 911. Operative treatment of vesico-urethral and vesico-vaginal fistulae by vaginal route, with notes on 33 cases. *Ind med Gaz*. 1937, 72, 282.