Born 20 July 1861 at Blewick Antony in the parish of Torpoint in Cornwall, the seventh child and second son of the eleven children born to William Lyne Blight, farmer, and Caroline Treliving, his wife. He was educated at the Independent College, Taunton, now called Taunton College, at Guy's Hospital, where he was assistant demonstrator of practical physiology, and at the Newcastle-upon-Tyne School of Medicine. He practised first at Walthamstow, next at Diss in Norfolk, and from 1894 in Cardiff. He was president of the Cardiff Medical Society during the years 1914-15 and delivered the opening address, on arterio-sclerosis, an abstract of which was published in *The Lancet*, 1915, 1, 1167. After the war of 1914-18 he served as a member of the neurological and special appeal boards. He married Clara, daughter of Henry Wigfield of Sheffield, on 6 September 1916. She survived him but without children. He retired from practice in 1925 and lived at Bournemouth until his sudden death on 29 May 1940. Blight is described as a quiet and solitary practitioner who was never in robust health and kept himself to himself. He had a general and panel practice and was greatly respected by his professional colleagues and patients, but he never showed any aptitude for or interest in surgery. He was a staunch freemason and a devout churchman, holding strong evangelical views. His hobbies were gardening and continental travel.