Hi Tan
I have managed to locate my Evan Williams. He was in Corwen in 1841 with his family. in '41 the family were living in Tafam Y Pric, Corwen and the census gives his age as 40 and his wife Ann as 35 but we know how the '41 rounded ages up. The 1851 gives their ages as 48 and 49. Their daughter Jane married in 1853 in Gwyddelwern and Evans occ. was Ag Labourer. I don't have the certificate but I've seen the entry at Dolgellau R O but it didn't give an address. In 1851 the family lived at Ty Gwyn, Corwen. Jane had siblings Owen, Gwen, Mary and William.
I hope some of this ties in with yours, that would be wonderful
Bev