Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Salesbury, William, 1520?-1600?, 3 canlyniadau
- Thomas, Evan, d. 1781, 1 canlyniadau
- Perry, Henry, 1560?-1617, 1 canlyniadau
- Withering, William, 1741-1799, 1 canlyniadau
- Roberts, David, physician, 1 canlyniadau
- Pierce, David, botanist, 1 canlyniadau
- Culpeper, Nicholas, 1616-1654, 1 canlyniadau
- Wheeler, Thomas, 1754-1847, 1 canlyniadau
- Roberts, Richard, fl. 1805, 1 canlyniadau