In Book XII, Chapter XIV of the Historia, Cadwaladr is given as the last in a line of kings that began with Brutus of Troy.
•
Cadwaladr's name appears without the identifying patronymic 'ap Cadwallon' in a number of historical and literary works, such as in the Armes Prydein.
Some legends connect the church with legendary King Cadwallo (now usually referred to as Cadwallon ap Cadfan, father of Cadwaladr.
Cadwaladr's attempt to reclaim his lands with the help of a Danish fleet in 1144 forms the background to The Summer of the Danes by Ellis Peters in the Brother Cadfael series.