Editing Category:Welsh (section)

===Red Book of Hergest===
The Red Book of Hergest (Welsh: Llyfr Coch Hergest), Oxford, Jesus College, MS 111, is a large vellum manuscript written shortly after 1382, which ranks as one of the most important medieval manuscripts written in the Welsh language. It preserves a collection of Welsh prose and poetry, notably the tales of the Mabinogion and Gogynfeirdd poetry. The manuscript derives its name from the colour of its leather binding and from its association with Hergest Court between the late 15th and early 17th century.

The manuscript was written between about 1382 and 1410. One of the several copyists responsible for the manuscript has been identified as Hywel Fychan fab Hywel Goch of Buellt. He is known to have worked for Hopcyn ap Tomas ab Einion (c. 1330–1403) of Ynysforgan, Swansea, and it is possible that the manuscript was compiled for Hopcyn.

The first part of the manuscript contains prose, including the Mabinogion, for which this is one of the manuscript sources, other tales, historical texts (including a Welsh translation of Geoffrey of Monmouth's Historia Regum Britanniae), and various other texts including a series of Triads. The rest of the manuscript contains poetry, especially from the period of court poetry known as Poetry of the Princes (Welsh: Gogynfeirdd or Beirdd y Tywysogion), including the cycles Canu Llywarch Hen, Canu Urien, and Canu Heledd. It contains also poems by Myrddin Wyllt. The Red Book is similar in content to the White book of Rhydderch, of which it has at times been supposed to be a copy. Both are now thought, however, to descend from a lost common ancestor or ancestors.

The manuscript also contains a collection of herbal remedies associated with Rhiwallon Feddyg, founder of a medical dynasty that lasted over 500 years – 'The Physicians of Myddfai' from the village of Myddfai just outside Llandovery.<ref> Wikipedia: Red Book of Hergest 16 Mar 2023</ref>