East Slavic history

thumb|Gostomysl depicted on the first plate of the book Illustrated History of the Russian State|Karamzin (1836), depicting the history of Russia. Gostomysl (, ) was a legendary 9th-century prince or posadnik of Novgorod, who was introduced in chronicles of the XV century and developed in the Russian historiography by Vasily Tatishchev (1686–1750).

10th century Slavic noble

eastern European archaeological culture

former state in present day Belarus

Eastern European archaeological culture

Mezamir (, ; 560) was the chieftain of the Antes, an early Slavic tribal confederation in Eastern Europe, believed to have been active around the year 560, at which time the Avar expanded further into Europe. He was the son of Idariz, and had a brother, Kelagast. Mezamir was recorded by Menander Protector (fl. 558–582). Mezamir was described as "powerful", and had most likely established a Slavic confederation sometime before the 560s, which initially thwarted the Avar khaganate. At this time, the Antes were subject to the Byzantine Empire, ruled by Justinian I (r. 527–565), with the supreme c