A copy of the Irish catechism Lochran na gcreidmheach (1676) authored by Froinsias Ó Maolmhuaidh (Francis Molloy, Irish Franciscan monk of St Isidore's, Rome).
- s. xviiiex or later
- 1590-1592
- John Brooke [of Mawddwy]
- s. xvii
- John Jones [of Gellilyfdy]
- s. xviiin
- John Jones [of Gellilyfdy]
- xiiimed
Irish manuscript in the hand of Cú Choigcríche Ó Cléirigh.
- 1642
- Cú Choigcríche Ó Cléirigh
Irish paper manuscript (184 folios) containing the Martyrology of Donegal and related matter in the hand of Mícheál Ó Cléirigh.
- s. xvii
- Mícheál Ó Cléirigh
Irish paper manuscript (115 ff.) containing a copy of the Martyrology of Donegal and related matter in the hand of Mícheál Ó Cléirigh.
- 1630
- Mícheál Ó Cléirigh
Welsh law-book, Tr of the Blegywryd redaction of the Welsh laws (Cyfraith Hywel)
- s. xivin
- Gwilym Was Da
A composite manuscript consisting of three sections, (a) A composite compilation of poems on the Uí Raghallaigh (O’Reilly’s), (b) a fragment of In cath catharda and (c) two medical fragments.
- s. xv.(?) + s. xvi-xvii + s. xviii
Irish manuscript containing a copy of Mícheál Ó Cléirigh's Foclóir na Sanasán Nua (publ. 1643) and Foras focal (73qq).
- 1685/6
- Pádruic Mac Oghannan
- 1604-1610
- John Jones [of Gellilyfdy]
Paper manuscript containing an extensive anthology of Irish bardic verse.
- s. xvii
- Aodh Ó Dochartaigh
Autograph manuscript of Ó Mealláin’s journal account of the beginning of the Irish Confederate Wars, covering the years 1641-1647.
- s. xvii
- Toirdhealbhach Ó Mealláin