Brut y Tywysogion

Brut y Tywysogion (English: Chronicle of the Princes) is one of the most important primary sources for Welsh history.

[1] It is an annalistic chronicle that serves as a continuation of Geoffrey of Monmouth’s Historia Regum Britanniae.

The most important versions are the one in Robert Vaughan's Peniarth MS. 20 and the slightly less complete one in the Red Book of Hergest.

The main focus is on the rulers of the kingdoms of Gwynedd, Powys and Deheubarth, but ecclesiastical events are also mentioned, such as the bringing of the date of celebrating Easter in the Welsh church into line with Rome by "Elbodius" (Elfodd), Bishop of Bangor, in 768.

Events in England, Ireland, Scotland, Brittany and sometimes France are also briefly chronicled.

Peniarth Ms. 20, folio 260v. (c.1330). This manuscript is the earliest copy of Brut y Tywysogion , a Welsh translation of a lost Latin work, the Cronica Principium Wallie
The opening lines of Brut y Tywysogion from the Red Book of Hergest