About 1774 , he went to live at Cardigan ; but it was Tre-fach which he regarded as his home as long as he lived. He founded a Baptist chapel in Cardigan town in 1775-6 , and another in 1797 in Berwig a little distance away. He was a justice of the peace for the counties of Pembroke and Cardigan as well as for the borough of Cardigan ; contemporary writers frequently refer to this, and some go so far as to say that he was chairman of the quarter sessions (perhaps of the borough justices); William Richards of Lynn (q.v.) refers to him as a Deputy Lieutenant . It was natural for later research-workers to doubt this, in view of the fact that the Test Act barred Nonconformists from the bench — others hazarded the explanation that he had become a justice of the peace when he was still an Anglican , and that his brother justices had tolerated him. It is more likely that he was covered by the Indemnity Acts , for B. Rees (below) reports having seen the memorandum of his being sworn in at Cardigan , and that was in 1772 , long after he had become a Baptist . And the records of quarter sessions in Pembroke and Cardigan counties (now in the N.L.W. ) show that he sat on both benches. His position proved an asset to his fellow- Nonconformists when war broke out in 1793 . In 1792 , he had supported M.J. Rhys 's plan to send Bibles to France , and was, in fact, treasurer of the fund raised for this purpose. But when the 1793 crisis occurred he summoned a conference of ministers of the ‘Three Denominations’ in the west (about forty of them responded and met at Newcastle-Emlyn on 13 Feb. ), and drafted a resolution expressing loyalty to the British Constitution ; the resolution was published, with a ballad (no. 541 in J. H. Davies 's Bibliography of Welsh Ballads ; see also B.B.C.S. , vi, 276) which may, or may not, have been written by Williams himself. It is doubtful whether this did much to allay the suspicion with which the Nonconformists of west Wales were regarded in 1797 ; but we hear nothing of William Williams during that pother.
Meantime, the cleavage among the Baptists was growing. In addition to his prejudice against ‘hot-headedness,’ Williams , like his colleagues mentioned above, was a ‘ Scriptural Trinitarian ,’ i.e. he believed that the Trinity represented not three ‘persons,’ but the three functional aspects of God. This led him to defend Peter Williams 's (q.v.) Bible , and to defend even more strongly the Welsh edition of ‘ John Canne 's Bible ,’ which was the joint production of Peter Williams and the Baptist David Jones ( 1741? - 1792 ) (q.v.) , and which led to the excommunication of Peter Williams by the Methodists . There are some who believe (but without much foundation) that it was he who wrote Dialogous [ sic ] which was printed in 1791 . In 1793 he published in Y Cylchgrawn Cynmraeg (205-8) a synopsis of Courmayer 's views which were opposed to the orthodox doctrine of the Person of Christ. And when the ‘unorthodox’ Baptists felt compelled to leave the Association at Salem Meidrym in 1799 , he published a protest against the ‘despotism of Associations’, Gair yn ei Bryd at Lywodraethwyr y Cymanfaoedd, neu Yspryd y Byd a'r Yspryd sydd o Dduw yn cad eu gwrthgyferbyn , in which he equated the ‘infallibility of the Association’ with the ‘infallibility of the Pope’ ( 1799 ; republished in Yr Ymofynydd , 1849 , 201-3; summarised in Traf. Cymd. Hanes Bed. , 1930 , 45-7). It seems probable that it was only his death which saved William Williams from excommunication.
In 1784 , he had taken as his third wife Dorothy Lewis of Llwyngrawys , Llangoedmor (see Meyrick , Cardiganshire , for information about some of the family). He had eight children by this marriage, but only one son and three daughters survived him. He d. 13 Aug. 1799 , ‘aged 67,’ and was buried (as was his widow in 1803 ) in the Ebenezer burial-ground on the Tre-fach estate . His children were not Baptists , and it is significant that the inscription they placed on their father's tombstone referred to him as ‘ William Williams , Esquire , of Trevach .’
Emeritus Professor Robert Thomas Jenkins, C.B.E., D.Litt., Ll.D., F.S.A., (1881-1969), Bangor