Karadavc (Caradawg/Caradaog) may have been a popular Romano-British name - there are several kings named this or similar. This Caradawg, son of Bran, features in the Welsh "Mabinogion" tale of his aunt, Branwen. In the tale he is left in charge of Britain with a group of officers, all of whom are killed by one of his parents' cousins, who was wearing a cloak of invisibility. Left alive, Caradawg went mad with confusion and died - featuring as one of the "Three people who broke their hearts from bewilderment" in the Welsh Triads, along with his aunt herself*.

Although there is a possibility this figure is based on Caratācus (<35 – >51 CE : Biography), Bromwich* points out that no one appears to have believed this before 1700 and rates it as a poor attempt to tie both Caratācus and the Welsh genealogies to the introduction of christianity to Britain.

Whether the same person or not, neither Caradawg nor Caratācus could have expected that this would have been their contribution to posterity...