The Principality of Suzdal, from 1157 the Grand Principality of Vladimir, commonly known as Vladimir-Suzdal, or simply Suzdalia, was a medieval principality that was established during the disintegration of Kievan Rus'. In historiography, the territory of the grand principality and the principalities that emerged from it is commonly denoted as northeast Russia or northeast Rus'.
Yury Dolgoruky (r. 1125–1157) moved his capital from Rostov to Suzdal in 1125, following the death of his father. He ruled a principality that had become virtually independent. His son Andrey (r. 1157–1175) moved the capital to Vladimir and had Kiev sacked in 1169, leading to political power shifting to the north-east. Andrey's younger brother Vsevolod III (r. 1176–1212) secured control of the throne, and following his death, a dynastic conflict ensued. Yury II (r. 1212–1216, 1218–1238) was killed during the Mongol invasions of 1237–1238. His younger brother Yaroslav II (r. 1238–1246) and the other princes submitted to Mongol rule.
