House Dondarrion of Blackhaven is a vassal house that holds fealty to House Baratheon of Storm's End. Their lands are located within the Dornish Marches, a region of the Stormlands that lies to the north of Dorne. Their castle is called Blackhaven and the head of the house is the Lord of Blackhaven. House Dondarrion is ruled by Lord Beric Dondarrion, a charismatic and popular young lord, noted for his skill at tourneys. House Dondarrion's sigil is a forked purple lightning bolt on a black sky speckled with four-pointed stars.