The second son of the Rev John Dehane, MA, Vicar of Beckbury, Shropshire, and of Kildwick, Yorkshire, and of a daughter of John Wright, of Bolton Hall, Yorkshire, a descendant of Sir Nathan Wright, Lord Keeper under Queen Anne. He was a fellow-apprentice with Dr Bell Fletcher at Shiffnall, and was educated at Middlesex Hospital, where his brother, John Dehane, had been House Physician. He settled in practice at Wolverhampton, and was appointed Surgeon to the Dispensary, which was enlarged into the South Staffordshire General Hospital, of which he acted as Surgeon for many years. For the purpose of advocating sanitary improvement he became a member of the Town Council; his exertions, opposed at first, were adopted later. He became a Certifying Surgeon under the Factory Extension Act, which he warmly supported, was a member of the Committee of Certifying Surgeons, was one of the Medical Officers of the Great Western Provident Society, and Surgeon to the Poor Law Union. He lived and practised in Queen Street, Wolverhampton, where he died suddenly from heart disease on September 8th, 1869.