Demyan Glebovich of Beloozero (1263-c1270)

According to some genealogies, ha was called Demyan-Vasili or simply Vasili. He is Known only from genealogies. He died, childless, most likely a minor, before 1277: it can be assumed from the fact that his father, going to the Golden Horde, took with him his son Mikhail, while his eldest son, prince Demyan, is not mentioned any more.