
1) British traditional history 2) Mythological princess
Found on
https://www.crosswordclues.com/clue/venissa

Venissa (Genissa, Genvissa, Genuissa), according to Geoffrey of Monmouth`s 12th century Historia Regum Britanniae, was a daughter of the Roman Emperor Claudius, whom he gave in marriage to the British king Arvirargus once he had submitted to Rome. According to Geoffrey`s account she was very beautiful, and so enchanted Arvirargus that he preferr.....
Found on
http://en.wikipedia.org/wiki/Venissa
No exact match found.