Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Ynisarwed Resolven Colliery Company -- Records and correspondence, 1 canlyniadau
- Yniscedwyn Iron, Steel and Coal Company -- Records and correspondence, 1 canlyniadau
- Trimsaran Coal, Iron and Steel Company., 1 canlyniadau
- Ynisarwed Resolven Colliery Company., 1 canlyniadau
- Ynyscedwyn Iron, Steel & Coal Company., 1 canlyniadau
- Evenjobb Manor (Wales), 1 canlyniadau
- Pob un
- Coal mines and mining -- Wales -- Swansea, 2 canlyniadau
- Glamorgan (Wales), 1 canlyniadau
- Iron industry and trade -- Wales, South., 1 canlyniadau
- Iron industry and trade -- Wales -- Glamorgan., 1 canlyniadau
- Deeds -- Wales -- Powys., 1 canlyniadau
- Pembrey (Wales), 1 canlyniadau
- Coal mines and mining -- Wales -- Pembrey., 1 canlyniadau
- Manorial courts -- Wales -- Powys., 1 canlyniadau
- Coal mines and mining -- Wales -- Carmarthenshire., 1 canlyniadau
- Coal mines and mining -- Wales -- Resolven., 1 canlyniadau
