- Peniarth MS 526 [RESTRICTED ACCESS].
- Ffeil
- 1583.
Calendarivm Gregorianvm perpetvvm, Antwerp : MDLXXXIII, with manuscript notes.
1 canlyniad yn uniongyrchol gysylltiedig Eithrio termau culach
Calendarivm Gregorianvm perpetvvm, Antwerp : MDLXXXIII, with manuscript notes.