- NLW MS 5264B, Vols I-II.
- Ffeil
- [early 17 cent.]
Sermons, mostly in Welsh, and religious notes and extracts, mostly in Latin, by 'Mr William Gryffuthe att Kemes in Powes' (p. 664).
One of the Welsh sermons (pp. 305-320) is a translation of a sermon by Henry Smith, St. Clement Danes, London (DNB, lii, 48).
Griffith, William, 1566?-approximately 1613