Board Thread:Warhammer 40k General Discussion/@comment-69.143.134.163-20150419161351/@comment-203.177.182.42-20170103053421

The first grey knight would be natheniel Garro or Iacton Qurze (not sure about the spelling) so i think the idea of the 2 lost legions becoming grey knights is flawed

another thing is that (i forgot which book) Ferrus is the first confirmed primarch to be killed. there was a lot of disbelief that a primarch could idea. this suggests that the 2 lost primarchs would have been either imprisoned or exilled i think the former i most likely

The information or knowledge of the crime of at least one of the legions seems to be known by a number of the 40k universe such as the primarchs and maybe a number of the older astarte. like in the first heretic