Ah - was it the same one from 1841 - not a bricklayer. I discounted as ages a bit out.
1941 HO107/1403/2/12/17 has ~
Church Street, Abergele, St Asaph RD.
Robert Roberts 25, Driver
Mary, 30
John, 9 b 1832
Sarah, 5 b 1836
William, 1 b 1839
Robert 3 months b 1841
Add - a quick search on GRO for Robert and William has probable mother's mn as Jones