Checked Wales, and all other English counties could not find a match for Sarah as wife, looked for mistranscriptions. This family was the nearest match. You could obtain the above birth cert for Nimroy and see if address, fathers occ. mothers name fits ? how did you get info mother is Sarah?
1901 - RG13; Piece: 5007; Folio: 68; Page: 44
Civil Parish: Llantrisant
Town: Brynsadler
Benjamin Giles 34 head, mechanic in potteries, Castle Carey, Somerset
Ellen Giles 31 wife, Queen Camel Somerset
Benjamin F Giles 11 son, Cardiff
Florence E Giles 9 dau, Llantrisant
Sarah J Giles 7 dau, Llantrisant
Ethel M Giles 3 dau, Llantrisant
William J Giles 1 son, Llantrisant
Sarah Willis 70 mother, wid, Queen Camel Somerset
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