Llyfr cyfrifyddiaeth John Jones, Gellilyfdy
- NLW MS 5279B
- File
- [early 17 cent.]
Part of Powel Manuscripts,
An incomplete transcript made by John Jones, Gellilyvdy, of a treatise on arithmetic. It is entitled 'Llyfr Sion ap William ap Sion o Gyfrifyddiaeth'.