No sooner had King Daeron I departed than the peace he had bought began to fray. The Dornish, chafing under Targaryen garrisons and the taking of highborn hostages, rose against their occupiers in 161 AC. Lord Lyonel Tyrell, left to govern the conquered land from Sunspear, was slain in the rising, and the men Daeron had set over the passes and castles were cut down or driven out one after another until little remained of the Young Dragon's conquest but the memory of it.
Daeron marched south again to reclaim what he had won, but the war had lost its first bright promise, and he would not live to finish it. Word reached him that the Dornish wished to treat for peace, and at a parley held beneath a peace banner he was set upon and killed by treachery, having reigned but four years and lived only eighteen. His brother and successor, Baelor the Blessed, made a lasting peace with Dorne and walked barefoot to free the Dornish hostages, and so the conquest of the Young Dragon was wholly undone. Dorne would keep its independence for near a century more, until at last it was joined to the realm by marriage rather than by the sword.