Born on 4 July 1890 at West Hartlepool, Durham, where his father Thomas George Ainsley (MRCS 1877, MD Durham) was in practice. His mother's maiden name was Hill. He was educated at Malvern College, at Caius College, Cambridge, where he took second-class honours in the Natural Sciences Tripos, part 1

Born on 6 June 1890 at Cardiff, the son of Charles William Marshall and Mary Jennings, he was educated at Cardiff High School and studied medicine at Charing Cross Hospital where he gained a University Scholarship in 1909. He graduated in 1912 with honours in medicine, pathology and forensic medi