Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Papurau Gwynfor Evans/Gwynfor Evans Papers,, 16 canlyniadau
- Papurau'r Academi Gymreig / The Welsh Academy Papers,, 4 canlyniadau
- William Condry Papers,, 3 canlyniadau
- Dr J. Lloyd Williams Music MSS and Papers, 2 canlyniadau
- Lord Goronwy-Roberts Papers, 2 canlyniadau
- Papurau'r Athro Griffith John Williams, 2 canlyniadau
- Miscellaneous letters, 2 canlyniadau
- John Cowper Powys Manuscripts and Papers, 1 canlyniadau
- David Jones (Artist and Writer) Papers, 1 canlyniadau
- J. H. Davies, Cwrt Mawr, papers, 1 canlyniadau
- Pob un
- Jones, Bobi, 1929-2017, 4 canlyniadau
- Oldfield-Davies, Alun, 1905-1988, 2 canlyniadau
- Clee, Tegwen, 1901-1965, 2 canlyniadau
- Davies, Cassie, 1898-1988, 2 canlyniadau
- Callaghan, James, 1912-2005, 2 canlyniadau
- Chater, A. O., 2 canlyniadau
- Palmer, Alfred Neobard, 1 canlyniadau
- Attlee, C. R. (Clement Richard), 1883-1967, 1 canlyniadau
- Payne, Ffransis George, 1 canlyniadau
- Prys-Davies, Gwilym Prys Davies, Baron, 1923-2017, 1 canlyniadau
- Pob un
- Peate, Iorwerth Cyfeiliog, 1901-1982, 43 canlyniadau
- Parry, Thomas, 1904-1985, 11 canlyniadau
- Ellis, T. I. (Thomas Iorwerth), 1899-1970, 11 canlyniadau
- Griffiths, John Gwyn, 11 canlyniadau
- Lewis, Saunders, 1893-1985, 8 canlyniadau
- Jarman, A. O. H. (Alfred Owen Hughes), 7 canlyniadau
- Roberts, Kate, 1891-1985, 6 canlyniadau
- Rees, Mati, 1902-1989, 6 canlyniadau
- Williams, G. J. (Griffith John), 5 canlyniadau
- Gwenallt, 1899-1968, 5 canlyniadau
- Pob un
- Welsh language, 1 canlyniadau
- Radnorshire (Wales), 1 canlyniadau
- Agriculture -- Research -- Wales., 1 canlyniadau
- Folklore -- Wales., 1 canlyniadau
- Monmouth (Wales) -- Politics and government., 1 canlyniadau
- Landscape protection -- Wales, 1 canlyniadau
- Ornithology -- Wales, 1 canlyniadau
- Historic sites -- Wales, 1 canlyniadau
- Herbals, 1 canlyniadau
- European polecat, 1 canlyniadau