David Trail (1875-1935) was a rugby union international who represented a forerunner of the British and Irish Lions, known as the Anglo-Welsh on their tour of Australasia in 1904.
He went on to study medicine and became a doctor practising at Guy's Hospital.
Trail learnt his rugby at Dulwich College, a school that had already produced a number of international players.
He went on to play for the powerful Guy's Hospital Football Club.
He made his international debut on 2 July 1904 at Sydney in the Australia vs Anglo-Welsh match.