Hello, My research is on Rev. Samuel A Williams 1791-1878 who is listed as a cousin of David Williams. Samuel joined the church at Troedrhiwlalar when he was in his early teens.
He went on to become a minister and served in 4 churches in Wales before moving to New York State in the US. He served in one church in NY and then moved to Pennsylvannia, serving in two churches there. The last church he spent his last 20 years before retiring at the age on 80.
I do not know his parents names or how he was releated to David Williams. Samuel was my third great grandfather.