Born 15 July 1870 at Hall Bower, Denby Dale, near Huddersfield, third child and second son of Joshua Oldfield and Emma Davison, his wife. He was educated at a Grammar School and Leeds Medical School, taking the Conjoint qualification in 1893 and the London MB in 1895 BS in 1896. He proceeded to the MD in 1905 and the FRCS in 1909 and was elected FRCP in 1928. After working as assistant to Mayo Robson, Oldfield settled in general practice in his home town and later, specializing in gynaecology, was appointed surgeon to the Leeds Maternity Hospital and the Leeds Hospital for Women. He was subsequently elected gynaecological surgeon to the General Infirmary, retiring in 1939 as consulting gynaecological surgeon. Oldfield was also gynaecologist to the Batley and District Hospital, the Dewsbury General Infirmary, the Coronation Cottage Hospital at Ilkley, the Skipton and District Hospital and the Clayton Hospital at Wakefield. Oldfield was also active as a teacher. He succeeded John Benjamin Hellier, MRCS, as professor of obstetrics and gynaecology at University in 1919, and retired in 1932 with the title of emeritus professor (For obituary of Professor Hellier see *Journal of Obstetrics and Gynaecology*, 1925, 32, 558.) Oldfield had examined in his specialty at Oxford. He took a generous interest in the welfare of his students and nurses. He was a member of the Leeds and West Riding Medico-chirurgical Society, served as secretary of the section of gynaecology at the annual meeting of the British Medical Association in London in 1910, and served the office of president of the North of England Obstetrical and Gynaecological Society. Oldfield married on 30 June 1903 Emma Gertrude Whitaker. He practised at 25a Park Square, Leeds, and died at his country house Moor Hill, Harewood, on 27 May 1945, aged 74. Mrs Oldfield survived him, with two sons and two daughters. One son, Michael Whitaker Carlton Oldfield, MBE, is a Fellow of the College, and was assistant surgeon at the General Infirmary, Leeds, but serving abroad, as were his brother and both brothers-in-law, at the time of Carlton Oldfield's death. Oldfield's recreations had been hunting, farming, and golf, which he often played with Lord Moynihan. Publications: Septic infections, in Eden and Lockyer *The new system of gynaecology*. London, 1917, 1, 525-66. G E Herman *Difficult labour*, 7th edition revised by C Oldfield. London, 1929. Pernicious vomiting of pregnancy. *Brit med J* 1922, 1, 789.