Kingdom of Galicia–Volhynia
Danylo Romanovych (Daniel I of Galicia or Danylo Halytskyi) son of Roman Mstyslavych, re-united all of south-western Rus', including Volhynia, Galicia and Rus' ancient capital of Kyiv. Danylo was crowned by the papal archbishop in Dorohychyn 1253 as the first King of all Rus'. Under Danylo's reign, the Kingdom of Galicia–Volhynia was one of the most powerful states in east central Europe.