However, the repeated attacks of Cadell and Hywel were recorded in Asser's Life of King Alfred, where it states Hyfaidd was replaced by his brother Rhodri, although the cause of his death is unknown.
The attacks of Cadell and Hywel are documented in Asser's Life of King Alfred, where it states that Hyfaidd was replaced by his brother Rhodri, although the reason for his death remains unknown.