Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Charles, Prince of Wales, 1948-, 1 canlyniadau
- University of Wales., 1 canlyniadau
- Prys-Davies, Gwilym Prys Davies, Baron, 1923-2017, 1 canlyniadau
- Jones, Ieuan Gwynedd, 1 canlyniadau
- Prince of Wales Committee., 1 canlyniadau
- Williams, William, 1856-1936 -- Archives., 1 canlyniadau
- Rhieni dros Addysg Gymraeg (Organization) -- Records and correspondence., 1 canlyniadau
- Pob un
- Welsh language -- Political aspects., 4 canlyniadau
- Education, Bilingual -- Wales., 2 canlyniadau
- Welsh language -- Usage., 2 canlyniadau
- Education -- Wales., 1 canlyniadau
- Broadcasting -- Wales., 1 canlyniadau
- Television broadcasting -- Wales., 1 canlyniadau
- Welsh Language Acts., 1 canlyniadau
- Traffic signs & signals -- Wales., 1 canlyniadau
- Census., 1 canlyniadau
- Demographic surveys -- Wales., 1 canlyniadau
