Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Mostyn, Edward Pryce Lloyd, Baron, 1768-1854, 4 canlyniadau
- Llanover, Augusta Hall, 1802-1896, 1 canlyniadau
- Williams-Wynn, Watkin, 1772-1840, 1 canlyniadau
- Eben Fardd, 1802-1863, 1 canlyniadau
- Owen, Goronwy, 1723-1769?, 1 canlyniadau
- Davies, Robert, 1769-1835, 1 canlyniadau
- Williams, William, 1814-1869, 1 canlyniadau
- Blackwell, John, 1797-1840, 1 canlyniadau
- Evans, Daniel, Daniel Ddu o Geredigion, 1792-1846, 1 canlyniadau
- Jones, William, 1803-1886, 1 canlyniadau
- Pob un
- Copper mines and mining -- Wales -- Llandudno., 1 canlyniadau
- Darowen (Wales), 1 canlyniadau
- Mawddwy (Wales: Hundred), 1 canlyniadau
- Cumberland (England) -- Description and travel, 1 canlyniadau
- Durham (England) -- Description and travel, 1 canlyniadau
- Schools -- Wales -- Clynnog, 1 canlyniadau
- Schools -- Wales -- Clynnog -- Accounting, 1 canlyniadau
- Geology -- Scotland -- Western Isles., 1 canlyniadau
- Volcanism., 1 canlyniadau
- Beacons -- Wales -- Conwy., 1 canlyniadau