Polans (eastern)

The Polans (Polish: Polanie; Polyany; Polyane); also Polianians; were a Slavic tribe  between the 6th and the 9th century, which inhabited both sides of the Dnieper river from Liubech to Rodnia and also down the lower streams of the rivers Ros', Sula, Stuhna, Teteriv, Irpin', Desna and Pripyat. In the Early Middle Ages there were two separate Slavic tribes bearing the name of Polans, the other being the western Polans (ancestors of the modern Poles). The name derives from the Old East Slavic word поле or поляна (polyana), which means "field", because the Polans used to settle in the open fields. In roughly 862 Polans were attached to ancient Rus'. After shifting the ancient Rus' capital to their city Kiev, the Polans managed to provide their language as state language and were the first non-Rus' tribe to change their name to Rus' and played a key role in the formation of Ukrainian genetics. Ukrainian, Belorussian and, somewhat possibly, Rusyn languages descend from Polyan.