I have, at long last, decided to start work on my largest modeling project ever; a Forge World Reaver Titan. I acquired it several years ago but have been reluctant to start it as I wasn't confident enough in my modeling/painting skills to do such an intricate and expensive model justice, but I finally think I'm up to the task. However, I am interested in gathering more information about my chosen Legio.
With that in mind I have decided I want to build a Legio Crucius engine. I like the simple, stark colors of that Legio as well as their reputation for wreaking destruction on a massive scale. As I collect both 40k and Heresy era armies they are also suitable as they have existed in force since the Crusade (or earlier). Based on Ryza (alluded to as being second only to Mars in terms of knowledge, expertise, and power within the Mechanicum) they are generally indicated to be among the largest and well supplied of all the titan Legions. They are rated during the heresy as being on the highest tier in terms of Legio strength, on par with Gryphicus and other "Primus" grade Legio (surpassed only by a bare handful such as Legio Mortis, Destructor and presumably Ignatum). At the time of the mid 41st millennium they are powerful enough to garrison client/allied Forge Worlds (as indicated by their service to Angstrom during the Badab War). As a result it is entirely reasonable to assume that representatives of this Legio could/would have seen service in almost any major conflict from the Great Crusade to the 13th Black Crusade and anything in between, opening up vast narrative potential.
Unfortunately, beyond these facts there seems to be very little additional information about them available in contemporary sources, the most significant of which being in Imperial Armour's Badab War, Part II and cursory mention (as a frame of reference to which the Legio Gryphonicus is compared) in Horus Heresy Volume III: Extermination. Beyond these sources is there any other information available in the "canon" about them? I am particularly interested in which (if any) Knight Houses are know to have ties to them, as well as the character/characteristics of their Skitarii regiments and other Mechanicum military forces.