Manuscripts consisting of :
- A bound volume of letters, poems and miscellaneous items such as tickets and notices of lectures by Robin Ddu Eryri.
- A manuscript in the format of a diary recording Robin Ddu Eryri's trial and tribulations living amongst the Mormons in Wales, 1853-1854.
- An essay on John Elias.
- A form of Welsh dictionary, providing quick and witty definitions to common terms and names, beginning with adroddwr cofus and finishing with uniondeb.