Merry made his international début for Wales during the 1912 Five Nations Championship, in a much changed team for the encounter with Ireland.
Despite the win over Scotland, the Ireland match saw the Welsh selectors bring in seven new caps, five of them in the pack.
After a slow start Wales came through to narrowly beat the French, who were a weak team in their infancy.
It is unknown if Merry would have gained any further caps for the Welsh union team as in 1912 he switched to the professional code, joining Hull.
[4] On 15 February 1913, Merry was selected to play for the Wales rugby league team, making him a dual-code international.