The Century of Blood, sometimes called the Bleeding Years, is the period of roughly one hundred years that followed the Doom of Valyria and the collapse of the Valyrian Freehold. This period is noted for its chaos, war, bloodshed and political instability in both Essos and Westeros. The collapse of the Volantene hegemony in south-western Essos and the conquest of Westeros by Aegon I Targaryen mark the end of this period.