According to Procopius, a 6th-century Warni prince called Radigis was betrothed to the sister of the 'King of the Angli'. The historian Michael Wood has suggested that before the arrival of Wuffa's dynasty in Britain, it had been founded by "some powerful and important warrior" that was of an ancient royal line.

According to the 13th-century chronicler Roger of Wendover, Wuffa ruled from 571 to 578, but the origin of this information is unknown.