Iziaslav IV of Kiev
Iziaslav IV Vladimirovich (born 1186, last attested 1235–1236), son of Vladimir Igorevich of Galicia, was prince of Novgorod-Seversk before claiming Kiev. In 1233 he joined Daniel Romanovich's campaign against the Hungarians in Galicia, then defected and ravaged Daniel's lands.
In 1234 he brought Cuman allies from the steppe, routed Grand Prince Vladimir Rurikovich and Daniel near Torchesk and captured Vladimir. In 1235 he joined Michael of Chernigov in capturing Kiev and became grand prince, after which the chronicles lose sight of him; his death date is unknown.