Geirfynag i weithiau William Salesbury,
- NLW MS 2606B.
- Ffeil
- [1860x1877] /
Rhan oIoan Pedr manuscripts
An index by Ioan Pedr to William Salesbury's 'Llysieulyfr Meddyginiaethol' and to William Salesbury and Henry Perry: Eglvryn Phraethineb ... (London, 1595).