The Book of Llandaff is one of the oldest manuscripts of Wales. While its core is a gospelbook containing a copy of St Matthew’s Gospel, it is best known for its many substantial additions in the form of the Lives of St Elgar and St Samson, and various documents (such as charters) relating to the see of Llandaff and to bishops Dyfrig, Teilo and Euddogwy.
- s. xi1
- c. 1250
- s. xiv1
- Anonymous [hand in Harl. 4353, Cot. Cleo. A xiv and Book of Taliesin]
- s. xivmed
A lost source named for Dub Dá Leithe, abbot of Armagh (fl. 1049-1064). It is referred to by the Annals of Ulster, s.a. 630, 963, 1004 and 1021, and the copy of Baile in Scáil in Rawlinson B 512, f. 101r.
- s. ximed
Pocket gospel book produced around the tenth century, probably in Scotland; well known for containing additions in Scottish Gaelic (or Middle Irish)
- s. x1
Paper manuscript containing an extensive anthology of Irish bardic verse.
- s. xvii
- Aodh Ó Dochartaigh
- s. xv
- Aonghus Ó Callanáin
Manuscript miscellany which originally belonged to a larger codex, together with NLI MS G 2.
- s. xiv-xv
- Ádam Ó Cianáin
- s. xivex
- Tomás Cam Mac Fir Bhisigh, Áedh Óg [YBL scribe]
- s. xvi
- s. xiv
- Ruaidhrí Ó Cianáin, Doighre Ó hUiginn
- s. xvii
- Cú Choigcríche Ó Cléirigh
- s. xiv / s. xv
Medical tracts in Latin and Irish.
- s. xviim
- Pádruic Gruamdha Ó Siadhail
- s. xvi
- Ó Maoil Chonaire family, Aodh [scribe of RIA MS 23 N 10], Dubthach [scribe of RIA MS 23 N 10], Tornae [scribe of RIA MS 23 N 10], Anonymous [scribe of RIA MS 23 N 10 (pp. 131-142)]
- s. xvin
- Giolla Íosa Mac Fhir Bhisigh, Ádam Ó Cuirnín, Murchadh Ó Cuindlis
- 1384 x 1406
- Maghnus Ó Duibhgeannáin, Robeartus Mac Síthigh, Solamh Ó Droma
- Muirgheas mac Pháidín Ó Maoil Chonaire