The Croatan Tribe is nearly lost, with Wanda Firebaugh being the only known surviving member. (Wanda originally belonged to the Goodminton side, before Faq, and then Gobwin Knob.)
Other historical members of this tribe include the Overlord Firebaugh, her father, and Atomic "Tommy" Firebaugh, her brother.
Real World References
The real Croatan tribe is a part of the Roanoke Island mystery.
Additionally in RPG game Werewolf: the Apocalypse in the setting there exists 13 werewolf tribes with some more tribes lost in the past. Among them was Croatan Tribe which sacrificed itself.