From this time on he was George Fox's disciple and the apostle of the Quakers in Wales. He established his first ‘church’ at Pen-y-cefn, and immediately began to evangelise in Wrexham, journeying thence along the Marches to the south — to Monmouthshire and Glamorgan where he was more than once thrown into prison. In 1657, accompanied this time by Fox, he made a similar tour to North Wales, proceeding by way of Carmarthen, Aberystwyth, Machynlleth, Dolgelley, and Caernarvon. In the course of these tours, and of others which followed, he slowly gained ground, especially in Monmouth, Montgomery, and Merioneth, and acquired disciples of some distinction such as Richard Davies (q.v.) of Cloddiau Cochion and the Lloyds of Dolobran (qq.v.). From 1667 on, he was organizing and consolidating the movement, establishing monthly meetings, half-yearly meetings, and, in 1682, a yearly meeting. By 1686 the Quakers had begun to infiltrate into Anglesey — ‘truth hath got some entrance into Anglesey.’ But, so severe was the persecution, that from 1681 on some hundreds of the Welsh Quakers fled to Pennsylvania, thus seriously weakening the movement in Wales. He was faithful to the end. His wife, Katrin, had d. in 1695, and he went to live with his daughter, the wife of John Mellor, near Stafford, where he d. ‘on the 16th day of the ninth month,’ 1697 .