Rhayader, Radnorshire born wing half Jack Williams began his football career with Builth Wells from where he was signed on amateur forms by Second Division club Nottingham Forest in March 1912, making his Football League debut at centre forward immediately (the following day), scoring in a 3-0 win over Huddersfield Town. He played 3 more matches for Forest into April, before being signed by First Division Tottenham Hotspur in July 1912, however he spent 1912-13 on Spurs’ books without breaking through into their first eleven.
Williams signed for Southern League club Swansea Town in September 1913 and played for them both sides of the First World War, and when Swansea joined the new Third Division (South) in 1920, Williams played in their inaugural League fixture at Portsmouth in August that year. Although he lost his place in October and struggled to regain it, making only 19 appearances, he was then a regular during their next two seasons, and played his last match for The Swans in May 1923, nearly 10 years after joining them. During their League era he scored 4 goals in 96 appearances, before joining non league Mold Town in 1925 ahead of his eventual retirement.