Born in Rumworth, near Swinton in England, Marsh was schooled in Scotland. Marsh was educated at Edinburgh Institute before being accepted at Edinburgh University to study medicine.
At the time of his Scotland call up, Marsh was playing club rugby for Edinburgh Institution F.P., and was brought in at three-quarters.[8]
He moved to play for Edinburgh University in 1890. This did not go down well with his former club and the Athletic News of 27 October 1890 reported:[9]
Some rather bitter things are being said in Edinburgh about James Marsh, the Swintonian, preferring to play for Edinburgh University instead of with his old colleagues in the Edinburgh Institution Club.
This prompted a move to England that same season; and he then played for Swinton.[2]
Almost immediately on his move to Swinton, he was playing in the Lancashire versus Yorkshire match on 29 November 1890. He was noted as an Edinburgh University three-quarter and also as playing for Swinton. Lancashire won the match.[11]
After his move to England, it was during the 1890–91 season his strong club play brought him to the attention of the English selectors, and he was brought into England's annual North vs. South match.[12]
International career
In 1889, Marsh was selected for the Scottish international team when he was chosen to face Wales as part of the 1890 Home Nations Championship. Scotland beat Wales and Marsh was reselected for the second, and final game of the competition, away to Ireland at Belfast. With England having withdrawn from the tournament, a win over the Irish would give Scotland the Home Nations, but not the Grand Slam. Scotland won the match thanks to a single dropped goal from Henry Stevenson.
His move to England and his form for Swinton led to Marsh being selected for the 1892 Home Nations Championship for England in the game against Ireland, playing again at threequarters alongside Dicky Lockwood and George Hubbard. The English team was victorious, but Marsh was not selected for the team again. It is unknown if this was due to sanctions or actions taken by the rugby unions or if it was a selection choice.
Medical career
After qualifying as a doctor, Marsh moved to Manchester to set up a medical practice.