Blackheart is an ancestral weapon of House Dragomyr. It is one of the oldest dragonsteel long swords in the known world. It has been missing, and no one is sure if the sword has been taken up by someone else, or if it has been lost to the elements forever. In life, it was wielded by Aegor I and his descendants until it was lost. The last known wielder of Blackheart was Draegon I Dragomyr.