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British Library, Harley MS 1802, f 61r.


Old & Middle Irish

With  the contribution of Emerson Richards (Indiana University)


Welcome to our page dedicated to Medieval Celtic Languages! This page contains resources on Old & Middle Irish, as well as Welsh. Here at MEMSLib, we are always looking for contributions. If you would like to suggest a resource for this section, please contact us here.


Old & Middle Irish Resources

CODECS: Collaborative Online Database and e-Resources for Celtic Studies - a resource with repertories of texts and manuscripts for Celtic studies, an online bibliography, and much more.


eDIL - Electronic Dictionary of the Irish Language (eDIL) - a digital dictionary of medieval Irish. It is based on the Royal Irish Academy’s Dictionary of the Irish Language based mainly on Old and Middle Irish materials (1913-1976) which covers the period c.700-c.1700 but incorporates corrections and additions to thousands of entries.

eSenchasan online resource for the study of medieval Irish language texts.

Bibliography of Irish Linguistics and Literature – a great list of books available online.  

The Parsed Old and Middle Irish Corpus (POMIC) - is a corpus of Irish texts spanning the years from c. 700 to c. 1100. The current beta-version of the corpus consists of 14 texts which have been POS-tagged and syntactically parsed. The corpus is, however, a work in progress and future additions are envisioned which will include texts written at the end of the Middle Irish period (up to around 1200) as well as very early legal Matériel that may, in some cases, be dated to the 7th century.

CELT: Corpus of Electronic Texts - CELT brings together source materials for the study of Irish literary and historical culture (in Irish, Latin, Anglo-Norman French, and English). Use the Resources page here to access specific manuscript collections, links to current scholarship projects, bibliographic profiles of Irish writers, dictionaries and linguistic corpora.

Medieval Welsh

Medieval Welsh Resources

Welsh Prose 1300-1425 - a site which presents a searchable corpus of Medieval Welsh prose. Some 2.8 million words are covered in 54 manuscripts. The manuscripts contain over 100 texts – here categorised into different genres. A searchable database of 2.8 million words used in Welsh manuscripts from 1300-1425.

Reading Middle Welsh - a resource to facilitate learning Middle Welsh from a basic level, using the Mabinogion as the source text. Provides a foundation for pronunciation, vocabulary, and beginning to advanced grammar (including a breakdown of lenitions), building up to reading Pwyll Pendyfig Dyved.

Other Medieval Languages

Would you like to explore other resource pages for medieval languages?

Do you have any questions on Celtic languages?

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Resource page updated by Cristina Alvarez - last updated 17/7/2023

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