Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Howard, Richard, Reverend, 2 canlyniadau
- Llandudno New Mine Company -- Accounting, 2 canlyniadau
- Wynn, John, Sir, 1553-1627, 1 canlyniadau
- Eure, Ralph Eure, Baron, 1558-1617, 1 canlyniadau
- Lloyd, Howel, d. 1783, 1 canlyniadau
- Howard, Richard, Reverend -- Correspondence, 1 canlyniadau
- Lloyd, Edward, of Cefn, St. Asaph, 1 canlyniadau
- Gwernymynydd Lead Mine Company (Wales), 1 canlyniadau
- Conway, John Conway, fl. 1784-1821, 1 canlyniadau
- R. & C. Sankey -- Accounting, 1 canlyniadau
- Pob un
- Copper mines and mining -- Wales -- Llandudno., 2 canlyniadau
- Copper industry and trade -- Wales -- Llandudno, 2 canlyniadau
- Copper ores -- Wales -- Llandudno, 2 canlyniadau
- Lead mines and mining -- Wales -- Mold, 1 canlyniadau
- Mines and mineral resources -- Wales -- Trawsfynydd, 1 canlyniadau
- Gentry -- Wales -- Mold, 1 canlyniadau
- Lead mines and mining -- Wales -- Trawsfynydd, 1 canlyniadau
- Mines and mineral resources -- Wales -- Llangelynin, 1 canlyniadau
- Coal mines and mining -- Wales -- Mold, 1 canlyniadau
- Spelter -- Wales, 1 canlyniadau
