Williams was born in
Pencader, Carmarthenshire, the youngest of ten children. He received his elementary education at Ysgol y Bwrdd, New Inn, but because of the death of his brother he had to leave when he was twelve to take up an apprenticeship as a weaver. At the age of twenty he started to preach and in 1895 he went to the prestigious Grammar School in
Newcastle Emlyn. From there he went on to
Trefeca College to train as a minister, but before he finished his studies he received a call to be minister of
Bethany, Ammanford, in 1900 and was ordained by the denomination (
Presbyterian Church of Wales) in 1901. By 1902 he was married to Alice Maud Jones, a relative to
J. T. Job, another leader of the 1904-1905 Welsh Revival. They had three children, including
Rheinallt Nantlais Williams. His grandson is
Stephen Nantlais Williams. His first wife died in 1911 and he married his second wife, Annie Price, a teacher, in 1916. Bethany, Ammanford was to be his only post as he stayed there until his retirement in 1944. He is buried in front of Bethany, Ammanford, next to J. T. Job and Gareth Davies. == Nantlais and the 1904-1905 Revival ==