sentences:  Treharne died at home in Barry in the Vale of Glamorgan in 1904 at the age of 42.The cause of death was recorded as a heart attack; Treharne had been told eighteen months prior that he was suffering from an enlargement of the heart, and that he was not to over exert himself.When Richard Mullock formed the first Welsh rugby union team in 1881, Treharne was one of the youngest members contacted to join the side.