The Jesus College MS. 20 Genealogies are a number of pedigrees found in Jesus College MS. 20, folios 33r to 41r.
The manuscript is of the late 14th century and is the largest surviving medieval collection of Welsh genealogical information. The forms of the names indicates a source prior to 1200. Parts of the manuscript are rubbed and dirty making reading difficult and parts of the text are corrupt.
The genealogies show a particular interest in south Wales and Morgannwg and contain much that is unique.
- Bartrum, P. C. (Ed.) (1966). Jesus College MS. 20. In Early Welsh genealogical tracts (pp. 41–50).
- Fitzpatrick-Matthews, Keith. (2006-03-9).
- Retrievable from http://www.kmatthews.org.uk/history/jesus_college_20/index.html
- Phillimore, Egerton & Evans, J. Gwenogvryn (Ed.) (1887). Pedigrees from Jesus College MS. 20. In Cy. VIII (pp. 83–92).
- Retrievable from http://www.maryjones.us/ctexts/jesus20gen.html
- Retrievable from http://www.archive.org/details/ycymmrodor08cymmuoft, http://www.archive.org/details/ycymmrodor05socigoog
- Thomas, Peter Wynn; Smith, D. Mark and Luft, Diana. (Eds.) (2007). Jesus 20 page 33r. Rhyddiaith Gymraeg 1350-1425. Welsh Prose 1350–1425.
- Wade-Evans, A. W. (Ed., Trans.) (1944). Vitae Sanctorum Britanniae et Genealogiae (pp. 318–19, first 3 sections only). Cardiff: University of Wales.