Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Talyllyn Railway., 2 canlyniadau
- Ynysymaengwyn Estate (Wales) -- Archives., 1 canlyniadau
- Ynysymaengwyn Estate (Wales), 1 canlyniadau
- Ffestiniog Railway., 1 canlyniadau
- Maesypandy Estate (Wales) -- Archives., 1 canlyniadau
- Abergynolwyn Slate & Slab Co., 1 canlyniadau
- Maesypandy Estate (Wales), 1 canlyniadau
- Ruthin British School., 1 canlyniadau
- Jones, J. D. (Joseph David), 1827-1870 -- Archives., 1 canlyniadau
- Jones, H. Haydn (Henry Haydn), Sir, 1863-1950 -- Archives., 1 canlyniadau