Mezue ahịrịokwu na-esonụ: Vasilko Konstantinovich (; 7 Disemba 1209, na Rostov <unk> 4 Machị 1238, na Sherensky ọhịa) bụ Onye isi nke mbụ nke Rostov, Rus'. Ọ bụ nwa Konstantin nke Rostov, na di nke Maria nke Chernigov. Ọ nwụrụ n'agha a lụrụ n'osimiri Sit n'oge
Mongol wakporo Kievan Rus' ma nwa ya nwoke bụ Boris nọchiri ya.