Genealogies from Jesus College MS 20

The genealogies from Jesus College MS 20 are a medieval Welsh collection of genealogies preserved in a single manuscript, Oxford University, Bodleian Library, Jesus College, MS 20, folios 33r–41r. It presents the lineages of a number of medieval Welsh rulers, particularly those of south Wales.^[1] The manuscript was compiled in the late 14th century, but many genealogies are thought to be considerably older.^[1] The latest pedigrees to have been included in the tract are those of Llywelyn ab Iorwerth (d. 1240) and Rhys Gryg (d. 1234).^[1] It shares some material with the earlier Harleian genealogies.

• Harleian Genealogies
• Bonedd Gwŷr y Gogledd
• Book of Baglan

• Siddons, Michael. "Genealogies, Welsh." In Celtic Culture. A Historical Encyclopedia, ed. John T. Koch. 5 vols. Santa Barbara: ABC-Clio, 2006. pp. 800–2.

• Egerton Phillimore and J. Gwenogfryn Evans (eds.). "Pedigrees from Jesus College MS. 20." Y Cymmrodor 8 (1887). pp. 77–92.
• Online editions:
  • "Full-text resources for ‘Dark Age’ history", Keith Fitzpatrick-Matthews.
  • "Welsh Genealogies from Jesus College MS 20", Celtic Literature Collective.
  • Jesus 20 page 33r, Welsh Prose 1350-1425. Diplomatic edition.

• Bartrum, P.C. Early Welsh Genealogical Tracts. Cardiff: UWP, 1966.
• Thornton, David E. Kings, chronologies, and genealogies: studies in the political history of early medieval Ireland and Wales. Occasional publications of the Oxford Unit for Prosopographical Research 10. Oxford: Linacre College, Unit for Prosopographical Research, 2003. ISBN 1-900934-09-4

• Jesus College MS. 20 at the Early Manuscripts at Oxford University digitisation project
• Catalogue record for Jesus College MS. 20