The House was founded as House Blackgard of Sunhold by Sofina Blackgard, after the death of Eddin Blackgard. Their seat was the fortress of Sunhold, which was formerly the summer palace and resort of House Blackgard. As of 305 AC, following the conquest of Volantis, the house has relocated their principal stronghold to this city.
The official words of the house are None Shall Pass, which they share with their overlords. The house was funded and supported by House Baerley, the Great House of Dorne. To showcase this former alliance, their sigil are three golden suns on a black bend with two crossed silver swords on white.
In the Wastelandic Empire, the house is alternatively known as the House of Norokin by the natives of the Free Cities. When they were first founded, the house went with the name House Blackgard of Sunhold.