Perhaps this will help. The 1891 Census lists Anne Richards, Head, Widow, age 39, born St. Dogmaels, Pembrokeshire, her children, then Joseph Williams, 78, Retired Mariner, followed by Elizabeth GWYNNE, sister, age 46, also born at St. Dogmaels.
The 1851 Census for St. Dogmaels is incorrectly attributed to Cardiganshire, instead of Pembrokeshire, but you will find living at 133 Mill Street, St. Dogmaels, Joseph Williams, 38, Mariner, Mary, 36, wife, Children John 14, Benjamin 11, Mary Ann 9, George 5, and Margaret 2.
Please note that living at 132 Mill Street is Mary Williams, widow, occupation: Miller, so she is quite possibly Joseph's mother.
Welsh for St. Dogmaels is "Llandudoch".
Aloha!
