Though the name of Caston Vaith is only vaguely known among the smallfolk of King’s Landing as that of some rebel Dornishman, the court of King’s Landing has had greater cause to know, and rue, the name of the man who had almost single-handedly maintained Dornish sentiment against King Daeron Targaryen, the rightful lord and protector of Dorne. In his endless efforts, Lord Caston lost much of his army in return for what seemed to be only fleeting victories against his enemies, yet Dorne’s commoners (and far too many of its nobles) were heartend by it. So when a raven arrived from Sandstone, the news it contained was enough to rouse Prince Viserys and the small council from their beds for a hasty meeting, and afterwards the news began to spread throughout the castle (and even, slowly, to trickle down into the city) that CastonVaith, the rebel leopard-lord who sacrificed an arm in his battles, was dead.
The exact manner of his death has not been clear, and there is much conjecture. It is generally agreed that he had sought to suborn Lord Ganlos Qorgyle, and that it was the lord’s famed son Ser Manfryd the Merciful who became aware of these intentions and chose to cleave to the king that had freed him from years of imprisonment at Ghaston Grey rather than to the prince who had put him there in the first place following the death of his paramour the Princess of Sunspear. Lord Caston was killed with most of his remaining men, though it seems a Blackmont—a well-known knight, at least in Dorne—managed to evade capture. Lord Caston’s brother, Ser Cyrus, was a prisoner according to reports.