Emma, I had a look on the 1851 Census today and this is the info I found:-
Your G G G Grandfather Enoch Roberts was born in 1777 in Llandrillo Denbighshire. In the census he was head of the family and was aged 74 and a widower. He was listed as a (pauper) formerly miller
Anne Roberts daughter aged 36 was also there and they both still lived at Pendyffryn in Glanwydden.
Enoch was not listed in the 1861 census so I presume that he died sometime after 1851.
Yesterday, I looked in the Archives for his burial records but couldn't find any but it may be that paupers are listed elsewhere in the books so I'll try again sometime.