Gerald of Wales

Anglo-Welsh churchman; born ca.1146; died 1223. His father was William de Barry, of a family of Norman settlers; his mother Angharad, daughter of the Welsh princess Nest and of the Norman Gerald of Windsor, Nest herself being daughter of Rhys ap Tewdwr, and reputedly mistress to Henry I for a time.

As well as being a churchman -- he rose to be an archdeacon, and to be elected bishop of the principal Welsh see, of Saint David's (although he was never to take office there, the Pope eventually annulling the election) -- Gerald was a writer, the source of his greater fame.
Among his works were