Lord Beric Dondarrion is the Lord of Blackhaven and the head of House Dondarrion. Initially sent out by Eddard Stark to lead a party of men to apprehend Ser Gregor Clegane for atrocities committed against the people of the Riverlands, he and his men then rallied deserters from different armies in the war, as well as commoners trying to defend their homes, to form a guerrilla resistance group known as the Brotherhood Without Banners, with Dondarrion as their leader.