Cyfyngwch eich canlyniadau yn ôl:
- Pob un
- Williams, H. Cernyw (Hywel Cernyw), 1843-1937, 1 canlyniadau
- Griffiths, Henry, 1812-1891, 1 canlyniadau
- Secondary Heads Association (Great Britain), 1 canlyniadau
- Welsh Secondary Schools Association., 1 canlyniadau
- Headmasters' Association (Great Britain), 1 canlyniadau
- Herbert, John, [alive 1968-1985], 1 canlyniadau
- Roberts, William, 1828-1872, 1 canlyniadau
- Job, Samuel, Illinois, 1 canlyniadau
- Lewis, Caleb, Blaina, 1 canlyniadau
- Pob un
- Education -- Wales., 2 canlyniadau
- Brecon (Wales), 1 canlyniadau
- Wales, 1 canlyniadau
- High school principals -- Great Britain -- Societies, etc., 1 canlyniadau
- Education, Secondary -- Wales -- Societies, etc., 1 canlyniadau
- High school teachers -- Wales -- Societies, etc., 1 canlyniadau
- Welsh periodicals., 1 canlyniadau
