Son of John Lewis, of Llandovery, where he was born on December 5th, 1859. He was educated at Llandovery College and at Christ's College, Cambridge. He graduated BA in 1882, after gaining a 1st class in the Natural Science Tripos, and afterwards entered St Bartholomew's Hospital, where he was House Surgeon, being later Senior Resident Medical Officer at the Hospital for Sick Children, Great Ormond Street. He practised in Hamilton Terrace for many years, and was chiefly devoted to the diseases of children, his clientele being very large. He was appointed Hon Consulting Physician to the Kilburn Dispensary and the Clergy Orphan School. Of Welsh descent, he had in his younger days distinguished himself as a Welsh International football player. Latterly he played golf very well. He died at 74 Hamilton Terrace, St John's Wood, after a very brief illness, on June 8th, 1925.