Hi Aled, Here are the occupants of Tyddyn Ucha, Llanelian, Denbighshire, in 1841 census.
Catharine Williams, age 85, Pauper. Born in County.
Eleanor Williams, age 60. No occupation, born in County.
Hugh Williams, age 50, Ag Lab. born in County.
1851 census.
Residing at Vigin, Llanelian.
Head:- Ellinor Williams age 68 unmarried. Pauper,late house servant. b. Betws.
Hugh Williams, age 60 unmarried, a carrier. b. Llanelian.
Hope this helps. Best wishes, Gwyn