Dafydd ap Maredudd Glais

Dafydd ap Maredudd Glais was a 15th century Welsh cleric. He was also a civil official, a translator of a chronicle of the Kings of England into Welsh, and a convicted murderer. His name is first recorded in the Ministers’ Accounts for Cardiganshire, in 1429, associated with John Robury and Griffith Prouth (also described as clerics, assumed to belong to the church at Llanbadarn, regarding a pledge for Thomas Kirkham, abbot of Vale Royal. Dafydd is later recorded to have been convicted of the murder of Griffith Prouth (but, being in holy orders, not condemned to death). Stripped of his orders, he then followed his family's municipal tradition.

In 1444 he wrote his own translation of the Historia Regum Britanniae from Latin into Welsh.