Hello Teresa1

What was Mary's address on her marriage certificates please?
I've found a possibility: Mary Thomas age 21, Lodger, Labourer, at Temple Street, Llangynwyd, Glamorgan, Wales on 1851. On the same page there is a Thomas family which could be connected - Thomas and Gwenllian Thomas.
Thomas Thomas age 51 Collier
Gwenllian Thomas age 60
Sarah Thomas age 28 Labourer (Iron works?)
David Thomas age 18 Collier
HO107 Piece 2461 Folio 112 Page 48
Kind Regards
Morgan