Boris Vasilkovich of Rostov

Boris Vasilkovich (1231-1277) was prince of Rostov from his father Vasilko's death fighting the Mongols in 1238; he kept Rostov while his younger brother Gleb received Beloozero, with their mother Maria ruling during their minority. In 1244 he travelled to Batu Khan and received his patent (yarlyk), the first of his eight visits to the Golden Horde.

A loyal ally of Alexander Nevsky, he accompanied Mongol census-takers to Novgorod in 1258. In 1277 he joined Mengu-Timur's campaign against the Alans, fell ill and died on 16 September, leaving sons Dmitry and Konstantin.