I'm sure this has been asked before but I failed to find any thread with the titles I searched for.
What is known or generally accepted about the 8 Marines who went to Titan to form the Grey Knights?
Also, Lexicanum lists the following:
Supreme Grand Master Janus - First Supreme Grand Master of the Grey Knights
Grand Master Garviel Loken - Formerly of the Luna Wolves
Grand Master Iacton Qruze - Formerly of the Luna Wolves
Grand Master Nathaniel Garro - Formerly of the Death Guard
Grand Master Varren - Formerly of the World Eaters
Grand Master Tyloss Rubio - Formerly of the Ultramarines
I recon all of these were in the first 8? Who is Janus and what else is known about him?
Also, what has become of these 8 founding Marines? Are they still part of the chapter?