Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Lewis, Saunders, 1893-1985, 5 canlyniadau
- Parry, Robert Williams, 1 canlyniadau
- Jones, David, 1895-1974, 1 canlyniadau
- Mynyddog, 1833-1877, 1 canlyniadau
- Gruffydd, W. J. (William John), 1881-1954, 1 canlyniadau
- Williams, G. J. (Griffith John), 1 canlyniadau
- Davies, Aneirin Talfan, 1 canlyniadau
- Davies, Gareth Alban, 1 canlyniadau
- Jones, R. Brinley, 1 canlyniadau
- Watkins, Vernon Phillips, 1906-1967, 1 canlyniadau
- Pob un
- Lewis, Saunders, 1893-1985 -- Correspondence, 2 canlyniadau
- Williams, G. J. (Griffith John), 1 canlyniadau
- Gutun Owain, fl. 1450-1498., 1 canlyniadau
- Hughes, Arwel, 1909-1988., 1 canlyniadau
- Isfoel, 1881-1968, 1 canlyniadau
- Evans, Leslie Wynne, 1911-1985., 1 canlyniadau
- Charles-Edwards, T. (Thomas), 1902- -- Correspondence, 1 canlyniadau
