St. Cyngen Glodrydd, King of Powys
King Cadell Ddyrnllwg's son, Cyngen the Renowned, is probably to be identified with the Aurelius Caninus denounced by Gildas in his late 5th century tract, De Excidio Brianniae. This name is a rather bad punning insult that means "dog-like". Gildas accused Aurelius-Cyngen of immorality and murder and causing Civil War in Britain. Later generations, however, appear to have only remembered his patronage of the saints and generous endowments to the church. What is probably his memorial stone was discovered being used as a gatepost in Tywyn (Gwynedd) in 1761. He was apparently buried with St. Cadfan in the local churchyard.