User blog comment:Clockwork Tactics/My Grey Knights/@comment-24909831-20141118224942/@comment-24909831-20141120084125

How big? I can make that out of the Ferghost Colonies, which is frontier sub-sector. It was colonised between 100-300.M39 by Lothringen family that fell out of grace and started rebellion and after their influence the sub-sector was pretty much left unattended. It should happen after 600.M41 if located there, or before 300.M41. It is quite small too, I am able to create in a matter of days.