Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Davies Bros Slate Merchants, Porthmadog -- Records and correspondence., 1 canlyniadau
- Davies Bros Slate Merchants, Porthmadog., 1 canlyniadau
- Davies, Jonathan, 1857-1933 -- Archives., 1 canlyniadau
- Twrog Mill (Llanwnda, Wales), 1 canlyniadau
- Fletcher Slate Yard (Caernarfon, Wales), 1 canlyniadau
- Penyrorsedd Slate Company., 1 canlyniadau
- Jones, Richard, 1863 or 4-1942 -- Archives., 1 canlyniadau
- Pob un
- Slate industry -- Wales -- Caernarvonshire., 3 canlyniadau
- Slate industry -- Wales -- Merioneth., 2 canlyniadau
- Schools -- Wales -- Caernarvonshire, 1 canlyniadau
- Architects and builders -- Wales -- Llanwnda -- Accounting., 1 canlyniadau
- Wheelwrights -- Wales -- Llanwnda -- Accounting., 1 canlyniadau
- Dissenters, Religious -- Wales -- Caernarvonshire., 1 canlyniadau
