The father, who is said to have been a blacksmith by trade, owned some land, and when he died, 18 March 1759, he left among other legacies one of £100 to endow Llwynrhydowen, the chapel founded by his son.

[1] Jones in 1721 entered the Presbyterian College, Carmarthen, then under Thomas Perrot, a president whose own orthodoxy was unquestioned, but many of whose pupils subsequently drifted into heterodoxy.

In 1723 Jones translated into Welsh and saw through the press Matthew Mead's Almost Christian tried and cast, which was published at Carmarthen in 1723.

For some years he was the only public advocate of Arminianism in Wales, though many of the younger ministers and Carmarthen students were probably in secret sympathy with him.

Towards the close of the year an anonymous pamphlet appeared professing to give from the Arminian point of view a "Correct Account of Original Sin."