Tristan’s cousin, husband of the Duchess of Milan.
He raised an army in Lyonesse and invaded Cornwall after Tristan’s death. Joined by Kahedins, he slew Andred, Mark’s treacherous seneschal, and captured Mark.
He later killed Palamedes when the pagan knight tried to abduct Isolde, Tristan and Isolde’s daughter.
Source
I Due Tristani | 1555