House Sidus - House History: The exact origin and date of founding of the House of Sidus is held in much contention amongst the ranks of both the ancient Mechanicum and the Officio Militaris College of Arms. According to official records retrieved from the data-vaults of both Ryza and Mars, the date of House Sidus' founding stands as 007.M31, as determined by information delivered and sworn as truthful by representatives of Ryza before the Parliament of Mars.Despite this, many amongst the Adeptus Mechanicus have since cast doubt upon the veracity of such claims. Indeed, the strength of Ryza has long been held in some contention, supporting as it did fewer numbers of warriors than a Forge World of its scale was capable of maintaining. The original records pertaining to the strength of Ryza and its holdings noted, with some contention, that the Forge World laid claim to no Knight house.Such an assertion was met with scepticism from many amongst the Cult Mechanicus, for the Forge World contained both the means and the knowledge to construct such machines. Many questioned why, in millennia of self-rule, the hierarchs of Ryza had deemed it unnecessary to ratify the creation of such a force in defence of the Forge World against threats a Titan Legion would be ill-suited to overcome.To this, Ryza held no answer, stating only that its magi had turned their minds to other pursuits. Though some demanded further investigation, none was forthcoming and, in time, suspicions were set aside in recognition of Ryza's considerable contribution to the Great Crusade, lest strife be caused by false accusation. Thus it came with much surprise to many amongst the Mechanicum when reports dispatched from beleaguered Imperial forces across the Ultima Segmentum spoke of Knights decorated in the livery and iconography of Ryza lending aid to their efforts.Responses from Ryza as to the allegiance and provenance of such Knights proved slow, a circumstance which representatives of the Forge World placed upon the fractured nature of communications during those troubling times. The same communiqués stated that the formation of House Sidus, as the nascent household was so named, had been created in the half-decade following the Drop Site Massacre on Isstvan V, a claim publicly derided by some amongst the Mechanicum.As evidence for the falsehood of such a claim, critics levelled accusations that the strength of House Sidus, made up as it was by considerable quantities of Knights Styrix, Knights Magaera and Knights Atrapos, would be impossible, even for the forges of Mars, to produce in such time.The true origin of House Sidus may forever remain a mystery for, though great scrutiny was turned towards uncovering the truth, little but circumstantial evidence pointing towards an alternative date of creation was found. Following lengthy investigation, it was with much reluctance that the official creation date for House Sidus was enshrined within Imperial annals, despite objections to the contrary.Disagreement with such a date is noted in two amendments to the records of House Sidus, stating that many of the household's Knight armours bore signs of solar decades of use rather than years, and combat reports attesting to the first recorded actions of House Sidus noting a rigidity in their movements and tactics often associated within extensive simulation training.Nevertheless, it is impossible to ignore the significant contribution House Sidus made across the Ultima Segmentum, lending aid to dozens of worlds during the Horus Heresy. In other times, the hiding of resources may have been judged far harsher, yet such wrongdoing paled in comparison to the heinous deeds of others -- thus the issue of House Sidus was cast aside in favour of more pressing concerns.