There is an interesting family on the 1841 that might be worth investigating:
Scotland Street, Llanrwst
HO107/1403/19/24/6
Elizabeth Jones, 35, widow, not born county
Elizabeth, 6, born county
Owen, 4, born county
A baptism that would fit for Owen
9 October 1836
Tabernacle Cogregational Church, Llanrwst
Owen Lloyd Jones son of John Jones and Elizabeth LLoyd
Gadget