RHUN

In Welsh mythology, Prince 'Rhun' was a son of Maelgwn.
King Maelgwn demanded that a distant son of one of his lords, Elphin, praise him and his court. Elphin refused, claiming his bard, Taliesin was a better bard and his wife a prettier woman than anyone the King had in his court. Taliesin knew what was happening, because he was a seer, and told Elphin's wife. Maelgwn's son Rhun went to Elphin's house to seduce his wife and prove Elphin's claims weren't true. Rhun got her drunk. When she passed out, Rhun tried to take her wedding ring off to prove her unfaithfulness; since the ring wouldn't come off, he cut off her finger. When King Maelgwn attempted to show the finger to Elphin, he pointed out that his wife cut her fingernails more often than the owner of the finger, had servants to kneed dough and never had any under her nails, and her ring was loose on her finger, and that one was tight. Taliesin had had a servant replace Elphin's wife.