Gleb Vasilkovich of Beloozero

Gleb Vasilkovich (1237-1278), younger son of Vasilko Konstantinovich, became the first prince of Beloozero after his father was captured and killed following the defeat at the Sit River in 1238, while his brother Boris held Rostov. A close ally of Alexander Nevsky, in 1257 he married a daughter or kinswoman of Sartak Khan, baptized Feodora.

In 1277-78 he joined Mengu-Timur's campaign against the Alans; when Boris died on campaign he succeeded to Rostov, but died on 13 December 1278 after a week's illness. His son Mikhail inherited Beloozero.