Several players have started with Garndiffaith and have gone on to win international caps. One such player was W. A. Williams who played outside half. He went on to Pontypool where he picked up an injury, when fit again he was left out of the side to face Neath. He then moved to Talywain before moving on to Newport, where he gained three Welsh caps in 1952/53. When his career finished his time with Newport he came back to play for the Garndiffaith at the age of 44.