Dublin, National Library of Ireland, MS G 4 originally part of the Yellow Book of Lecan

  • Irish
  • s. xivex
  • Irish manuscripts
  • vellum
G 4
originally part of the Yellow Book of Lecan
Provenance and related aspects
s. xivex
late 14th century
Hands, scribes
There are two main hands in this part of the manuscript:
Hands indexed:
Main hand (Mac Fir Bhisigh)

The main scribe (anonymous) was previously identified as Giolla Íosa mac Donnchaidh Móir Mac Fhir Bhisigh,(1)n. 1 Nessa Ní Shéaghdha, Catalogue of Irish manuscripts in the National Library of Ireland (1967). but based on a wider comparison of scribal hands, Tomás Ó Concheanainn has identified him as the latter's son, Tomás Cam Mac Fir Bhisigh.

Tomás Cam Mac Fir BhisighMac Fir Bhisigh (Tomás Cam)
(fl. c. 1400)
Irish scribe, son and assistant of Giolla Íosa Mac Fhir Bhisigh
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Additiona hand (Áedh Óg)

The last two items (cols 997-98) were added by someone who names himself Áedh Óg.(1)n. 1 Nessa Ní Shéaghdha, Catalogue of Irish manuscripts in the National Library of Ireland (1967). His identity is uncertain, but Tomás Ó Concheanainn suggests that he was probably a son of Ciothruadh Mac Fir Bhisigh, who in the early part of the 16th century (?) had the original Yellow Book of Lecan in his keeping.(2)n. 2 Tomás Ó Concheanainn, ‘Gilla Ísa Mac Fir Bhisigh and a scribe of his school’, Ériu 25 (1974): 170.

Áedh Óg [YBL scribe]Áedh Óg ... YBL scribe
Entry reserved for but not yet available from the subject index.

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Codicological information
Table of contents

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Primary sources This section typically includes references to diplomatic editions, facsimiles and photographic reproductions, notably digital image archives, of at least a major portion of the manuscript. For editions of individual texts, see their separate entries.

[dig. img.] “National Library of Ireland”, Anne-Marie OʼBrien, and Pádraig Ó Macháin, Irish Script on Screen (ISOS) – Meamrám Páipéar Ríomhaire, Online: School of Celtic Studies, Dublin Institute for Advanced Studies, 1999–present. URL: <>.

Secondary sources (select)

Ní Shéaghdha, Nessa, Catalogue of Irish manuscripts in the National Library of Ireland, fasc. 1: Mss G 1 – G 14, Studies in Irish Manuscripts, Dublin: Dublin Institute for Advanced Studies, 1967.
Dublin Institute for Advanced Studies: <link>
Ó Concheanainn, Tomás, “Gilla Ísa Mac Fir Bhisigh and a scribe of his school”, Ériu 25 (1974): 157–171.
OʼSullivan, William, “Ciothruadh’s Yellow Book of Lecan”, Éigse 18:2 (1981): 177–181.
National Library of Ireland, Report of the Council of Trustees for 1930–1931, Dublin, 1932. 27 pp.
16 Description by R. I. Best
Dennis Groenewegen
Page created
February 2011, last updated: November 2023