Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Roberts, Robert, 1834-1885, 2 canlyniadau
- Lhuyd, Edward, 1660-1709., 1 canlyniadau
- Lhuyd, Edward, 1660-1709 -- Correspondence, 1 canlyniadau
- Pennant, Thomas, 1726-1798, 1 canlyniadau
- Heaton, W., 1 canlyniadau
- Myddelton, John, 1685-1747, 1 canlyniadau
- Jones, Owen, Braichybib -- Will, 1 canlyniadau
- Lloyd, John, Ruthin, 1 canlyniadau
- Lloyd, David, Blaenyddol, 1 canlyniadau
- Mostyn, Richard, Penbedw, 1 canlyniadau
- Pob un
- Irish language -- Glossaries, vocabularies, etc. -- Latin, 3 canlyniadau
- Cornish language, 1 canlyniadau
- Snowdon (Wales), 1 canlyniadau
- Latin language -- Glossaries, vocabularies, etc. -- Welsh, 1 canlyniadau
- Plants -- Wales -- Merioneth, 1 canlyniadau
- Plants -- Wales -- Snowdonia., 1 canlyniadau
- Irish language -- Glossaries, vocabularies, etc. -- Welsh, 1 canlyniadau
- Fisheries -- Wales -- Dysynni, 1 canlyniadau
- Aran Benllyn (Wales), 1 canlyniadau
