Welsh-English grammar of Dafydd Ddu — 15th century

Welsh-English-Latin dictionary — 15th century

Book of Llewelyn — 15th century

Medical texts — 15th century

Theological texts — 14th century

Laws of Hywel Dda — 14th century, early

Dares Phrygius, etc. — 15th century

Red Book of Hergest — 15th century

Book of the Anchorite of Llanddewi Brefi — 14th century (1346)

Chronicles — 15th century