'''Vitrian Messinius''' is a [[White Consuls]] [[Lieutenant (Space Marine)Captain|LieutenantCaptain]] and [[Master of Recruits]], who commands [[Indomitus Crusade Fleet Tertius]]' [[Battlegroup Saint Aster]] as a [[Lord Lieutenant]].{{Fn|11a}}

He was among those At the time of the [[Space MarinesUltramar Campaign]] who joined Messinius was the 10th Company Captain of the reborn White Consuls and was leading a delegation to [[PrimarchUltramar]] to request aid for his Chapter. However he became caught up in the [[GuillimanTerran Crusade]]'s and accompanied the newly reborn [[Terran CrusadePrimarch]] and at that time, Messinius was the [[White ConsulsRoboute Guilliman]] 10th to [[Space Marine Captain|CaptainTerra]]. {{Fn|1a}} After surviving the journey to [[Terra]], he took part in the [[Battle of Lion's Gate]] against the [[Daemons]] of [[Khorne]]. In that battle, Messinius commanded a scratch [[Space Marine Company|Company]] of the Terran Crusade's surviving Space Marines and a number of the [[Palatine Guard]]. After the Daemons were defeated{{Fn|1}}, the [[Indomitus Crusade]] began and Messinius joined its forces as a [[Lieutenant (Space Marine)|Lord Lieutenant]]. He was then given command of [[Indomitus Crusade Fleet Tertius]]' [[Battlegroup Saint Aster]], which he led during the [[Battle of Machorta Sound]].{{Fn|2}}