Blackhaven sits near the Boneway in the Marches. Given a message to carry to the Storm King, the first Dondarrion was riding in the night through the Dornish Marches when two Dornishmen attacked him. His death seemed to be coming upon him when a purple lightning fell from the sky, forking to strike both of the attackers dead. The message was vital to the king’s victory in his campaign against Dorne, and so the messanger was rewarded with a lordship.
The only members of the house to appear or been mentioned are the current lord of the house, the handsome and gallant Lord Beric Dondarrion, and the Lord Dondarrion and his heir Ser Manfred from the days of Daeron II’s reign. Lord Beric is married to Lady Allyria of House Dayne, aunt to his squire Edric Dayne who is Lord of Starfall.