Sons of the Creed

The Sons of the Creed are a Codex compliant Chapter, usually assumed to be among the many successor chapters of the Ultramarines due to their astrographical closeness to Ultramar and the many times they have fought beside the sons of Gulliman.

Founding
The Sons of the Creed are first attested as allies of the Ultramarine's in the War on Vengeance 510.M33 leading the majority of Imperial historiographers to conclude that the Sons were created a century or two earlier during the Fourth or Fifth Founding. A minority of scholars, scorned as 'revisionists' challenge this view pointing to accounts of dark armored 'Knights' defending Human communities on the Eastern Fringe dating back to the Genocide in the wake of the Horus Heresy. Critics correctly observe that 'dark' can mean Ultramarine Blue and most likely does.