Rostislav Mikhailovich (, Bulgarian and Ukrainian: àþÃÂÃÂøÃÂûðò ÃÂøàðùûþòøÃÂ) (after 1210 / c. 1225 â 1262) was a Rurikid prince and a dignitary in the Kingdom of Hungary.
He was prince of Novgorod (1230), of Halych (1236âÂÂ1237, 1241âÂÂ1242), of Lutsk (1240), and of Chernigov (1241âÂÂ1242). When he could not strengthen his rule in Halych, he went to the court of King Béla IV of Hungary, and married the king's daughter, Anna.
He was the Ban of Slavonia (1247âÂÂ1248), and later he became the first Duke of Macsó (after 1248âÂÂ1262), and thus he governed the southern parts of the kingdom. In 1257, he occupied Vidin and thenceforward he styled himself Tsar of Bulgaria.
In 1243, Rostislav married Anna of Hungary (c. 1226 â after 1274), daughter of King Béla IV of Hungary and his wife, Maria Laskarina. Together they had the following children: