Blackfyre is the fabled sword of Aegon the Conqueror, made of Valyrian steel. The sword Blackfyre was held by Aegon the Conqueror during the War of Conquest. Blackfyre was held by every king of the Iron Throne until Aegon IV chose to bestow the sword on his bastard son by Daena Targaryen, Daemon Blackfyre, insted of his trueborn heir. Many saw the sword Blackfyre as a symbol of the monarchy. When Aegon IV died, Daemon felt he should be king insted of his half brother, Daeron II, which ultimately lead to the Blackfyre Rebellion. Although Daemon died in the fighting, each of his descendents held the sword until the bloodline reached its end with the death of Maelys the Monstrous in the War of the Ninepenny Kings. The sword Blackfyre thereafter went missing and has never been found.