From Warhammer 40k - Lexicanum
|This article is about the Chapter Master. For other uses of Agnathio, see Agnathio (disambiguation).
Agnathio was Chapter Master of the Ultramarines and Lord Macragge in 646.M32. He led over fifty Space Marine Chapters to Terra in the aftermath of The Beheading and restored order, helping appoint the new High Lords of Terra.