Gudrun Blackhair is a pirate leader, who rules a fleet of pirate ships based on a small island in the western ocean. This fleet was originally commanded by a huge warrior named Erik the Axe; she defeated him and killed him, and took over the fleet and the island. The island was the lair of a lich, who created an anti-magic zone on the island, which made it an ideal pirate lair. The lich, a female elven mage / cavalier / Surtur priest named Lady Whipporwill, made Erik's pirates pay her tribute; she was apparently defeated and destroyed by the party, but it is questionable whether she was really destroyed.
Gudrun is a devoted follower of Odin, and is known to execute those she finds fault with by simultaneously hanging them and running them through with a spear.
After the adventure on the island, Felimid joined her band, and apparently spends most of his time with her; he is seldom seen back in Aertael since.