The resurrectionists are a group whose purpose is to liberate the Dominator. They are more or less successful as the Lady and the Taken are eventually freed. The wizard Bomanz is wrongly considered one of them, as it is his son Stancil who sabotages his efforts and is at fault for the Lady’s escape from the Barrowland.
Their work is often referred to as the Resurrectionist Movement. The Lady destroyed them root and branch after her release, to prevent the Dominator's future escape.