House Vyronii

House Vyronii was a Knight house of proud and ancient lineage whose fortunes were bound closely to the void, for its home domain lay upon a world of storms and shattered archipelagos where its scions had learned to fight amid tempest and tide. The house maintained a strong tradition of service alongside the fleets and the wider Imperium, and its Knights were as comfortable disembarking from an assault ship into a contested landing as they were riding to war across open ground. Vyronii scions were raised to a code of honour that prized loyalty and the keeping of oaths above personal glory, a temperament that would define the house's course when the galaxy caught fire. When the Heresy divided the Knightly houses, Vyronii remained steadfast in its loyalty to Terra, and its scions took up arms against the traitor houses without hesitation, honouring the oaths their forebears had sworn to the Emperor. They fought in campaigns across the war-torn stars, their storm-grey Knights a bulwark of the loyalist cause wherever they were committed. The house paid a heavy price for its fidelity, its bloodlines thinned and its ancient suits lost in battle after battle, but it never wavered, and the honour of Vyronii endured where that of prouder houses had been cast away.