Principality of Polotsk
The area of today's Minsk was settled by Lithuanians in the 9th and 10th centuries AD. The Svislach River valley was the settlement boundary between two Early East Slav tribes – the Krivichs and Dregovichs. By 980, the area was incorporated into the early medieval Principality of Polotsk, one of the earliest East Slav principalities of Old Rus' state. Minsk was first mentioned in the name form "Měneskъ" (Мѣнескъ) in the Primary Chronicle for the year 1067 in association with the Battle on the River Nemiga. 1067 is now widely accepted as the founding year of Minsk. City authorities consider the date of 3 March 1067 to be the exact founding date of the city, though the town (by then fortified by wooden walls) had certainly existed for some time by then. The origin of the name is unknown but there are several theories.