Cyngen ap Cadell (also spelled Concenn[1]) was King of Powys from 808 until his death in 854 during a pilgrimage to Rome.
Cyngen was of the line of Brochwel Ysgithrog, and, after a long reign as king of Powys, he went on a pilgrimage to Rome and died there in 854.
Cyngen raised a pillar, originally a round-shafted cross,[1] in memory of his great-grandfather Elisedd ap Gwylog which stands near the later abbey of Valle Crucis.
This memorial had a lengthy inscription[1] and is known as the Pillar of Eliseg owing to a typographical mistake by the original carver.
In any case, traditional Welsh law does not seem to allow female inheritance, so Rhodri is presumed to have taken Powys by conquest.