Nightbringer | The Arthurian Online Encyclopedia

Palante


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 IsoldeTristan and Isolde’s daughter.


Source
I Due Tristani | 1555