Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Pennant, Thomas, 1726-1798, 9 canlyniadau
- Williams-Wynn, Watkin, 1749-1789, 1 canlyniadau
- Charles I, King of England, 1600-1649, 1 canlyniadau
- Pennant, David, 1763-1841, 1 canlyniadau
- Charles II, King of England, 1630-1685, 1 canlyniadau
- Bridgewater, John Egerton, Earl of, -1649, 1 canlyniadau
- Davies, Robert, 1616-1666, 1 canlyniadau
- Cromwell, Oliver, 1599-1658, 1 canlyniadau
- Shipley, William Davies, 1745-1826, 1 canlyniadau
- Davies, Mutton, 1634-1684, 1 canlyniadau
- Pob un
- Pennant, Thomas, 1726-1798 -- Correspondence, 2 canlyniadau
- North, Frederick, Lord, 1732-1792, 1 canlyniadau
- Strange, John, 1732-1799, 1 canlyniadau
- Morris, William, 1705-1763., 1 canlyniadau
- Pennant, Thomas, 1726-1798 -- Archives., 1 canlyniadau
- Pennant, David, 1763-1841 -- Archives., 1 canlyniadau
- Amico, Vito, 1697-1762 -- Correspondence., 1 canlyniadau
- Haller, Albrecht von, 1708-1777, 1 canlyniadau
- Cooke, Bryan, 1756-1821 -- Correspondence, 1 canlyniadau
- Pontoppidan, Erich, 1698-1764., 1 canlyniadau
- Pob un
- Switzerland, 1 canlyniadau
- Crustacea -- Italy -- Sicily., 1 canlyniadau
- Mollusks -- Italy -- Sicily., 1 canlyniadau
- Shells -- Italy -- Sicily., 1 canlyniadau
- Snails -- Italy -- Sicily., 1 canlyniadau
- Natural history., 1 canlyniadau
- Fossils -- Collection and preservation -- Wales., 1 canlyniadau
- Wales, North -- Description and travel -- Early works to 1800., 1 canlyniadau
