John Samuel Williams (of Dowlais), more commonly known throughout his life as 'J.S' or 'Jack Williams the Communist' was born in Bethseda, Caernarvonshire in 1900. He and his father moved down to the South Wales valleys at some point in the early years of the twentieth century and he worked as a coal hewer.
J.S. Williams probably joined the Communist Party during the early-mid 1920s. He became unemployed in 1926 and remained unemployed for the rest of his life. He devoted his energies to the Communist Party, the National Unemployed Workers' Movement and the Workers' Educational Movement. He was a National Council of Labour Colleges tutor and a student at Coleg Harlech. He served on the South Wales District of the Communist Party of Great Britain and was actively involved in the Hunger Marches of 1931, 1934 and 1936, leading the latter one when Lewis Jones was forced to return to South Wales.
J.S. Williams was involved in the recruiting and processing of volunteers in South Wales for the International Brigades during the Spanish Civil War. In 1937 J.S. Williams joined the International Brigades along with fellow Merthyr men Evan Peters, Lance Rogers, Tim Harrington, Roman Rodriguez (who was killed at Brunete in 1937) and Griff Jones to fight in the Spanish Civil War against fascism. However, whilst in Spain he became seriously ill, spending time in a Spanish Republican hospital before returning home to Merthyr. He died on the 13th October 1938 of pneumonia and cardiac failure.
Source: Introduction to the handlist of the collection by David Egan.
From the guide to the J.S. Williams (Dowlais), 1913 - 1939, (Swansea University)