[[Gregor Eisenhorn]] refers to the "Primarch" of the [[White Consuls]] [[Space Marine Chapter]], when stating that he made it a point to commend a heroic [[Space Marine Sergeant|Sergeant]] who saved his life, at the cost of the Sergeant's own, on [[Thracian Primaris]]. Since the White Consuls are a [[Successor Chapter]], and because there are were no living or active primarchs within the Imperiumat the time of these events, he seems to be using the term "Primarch" interchangeably with that of [[Chapter Master]].{{Fn|5}}