There is no confirming evidence that such a person existed, and it is contradicted by records such as the royal genealogies.
Prior to the 17th century, information about royal genealogy and achievements had been recorded mostly on versified inscriptions.
While the subjects of their history are different, the form is similar, using chronological royal genealogies as the structure for the narratives.
Manipulation of royal genealogies, in this and other sources, to enhance the claims of present rulers was common.
The royal genealogies provide no information per se about Manaw Gododdin.
Alexander himself at his coronation in 1249 heard his royal genealogy recited back through 56 generations to Scota.
I translated the dates using Israi's royal genealogy.
They open with the entrance of the bard, who demands food and drink in exchange for his recitation on Irish royal genealogy.
Alcuin had always been better than I at royal genealogies.
Like Matthew, Luke recounts a royal genealogy and a virgin birth for Jesus.