Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Lloyd, John, 1733-1793, 2 canlyniadau
- Owen, E. R., Bangor, 2 canlyniadau
- Panton, Paul, 1727-1797, 1 canlyniadau
- Pennant, Thomas, 1726-1798 -- Correspondence, 1 canlyniadau
- Jones, William, Sir, 1746-1794, 1 canlyniadau
- Davies, Hugh, 1739?-1821, 1 canlyniadau
- Royal Society, 1 canlyniadau
- Blagden, Charles, Sir, 1748-1820, 1 canlyniadau
- Gower, Foote, 1726-1780., 1 canlyniadau
- Haymarket Theatre (London, England), 1 canlyniadau
- Pob un
- Montgomeryshire (Wales) -- Geography, 1 canlyniadau
- Montgomeryshire (Wales) -- Genealogy, 1 canlyniadau
- Merioneth (Wales) -- Genealogy, 1 canlyniadau
- Caernarvonshire (Wales) -- Genealogy, 1 canlyniadau
- Anglesey (Wales) -- Genealogy, 1 canlyniadau
- Anglesey (Wales) -- History, 1 canlyniadau
- Merioneth (Wales) -- History, 1 canlyniadau
- Shropshire (England) -- Genealogy, 1 canlyniadau
- Denbighshire (Wales) -- Genealogy, 1 canlyniadau
- Caernarvonshire (Wales) -- History, 1 canlyniadau