Born on 7 March 1844 at his mother's home at Ddolgam, in the Llynfell valley, Carmarthenshire, was the son of Hezekiah and Ann Williams.
[1] In 1870 Williams married Mary Jones of Trap, Carreg Cennen; the death of his wife in less than a year led him to leave his home and occupation.
In 1874 he decided to qualify for the independent ministry; he returned home, began to preach at Gibea Chapel, and, after a preliminary training, was admitted to the Presbyterian College at Carmarthen in 1875.
[1] As "Watcyn Wyn", Williams had a wide reputation as a Welsh poet, dating from 1875, when he divided a prize with Islwyn at Pwllheli.
He published:[1] His autobiography Adgofion Watcyn Wyn, edited by John Jenkins (Gwili), appeared, with portrait, in 1907 (Merthyr).