General category: Welsh manuscripts
- s. xvi–xvii
- Roger Morris [of Coed y Talwrn], Thomas Evans [of Hendreforfydd]
- 1758
- 1758
- s. xvii
- John Jones [of Gellilyfdy]
- s. xviiin
- John Jones [of Gellilyfdy]
A late 16th-century transcript of the White Book of Rhydderch
- s. xviex
A copy of Y Seint Greal, probably transcribed from Peniarth MS 11.
- s. xvex
- s. xvii1
- s. xvii1
- 1631
Miscellany of Welsh and some Latin prose texts of various kinds.
- s. xv1
- Siancyn ap Dafydd ap Gruffudd
Welsh manuscript, an early witness to poems written by the Gogynfeirdd.
- s. xv2
- Gutun Owain