Mappa Księstwa Biržanskiego..,1645Biržai, Town views description Mappa Księstwa Biržanskiego... Is a map of, and guide to, the Duchy of Biržai, which existed from 1547 to 1811 in the Radvila/Radziwill family. Biržai (Birsen (German), Birże (Polish), Birzhai (Биржай, Russian – pre-1917 Биржи), and בירז/Birz or Birzh (Yiddish). First mention in literature: 1455 Year 1645 Author Juozas Narūnavičius-Naronskis (Jozeph Naronski) Sources http://www.birzumuziejus.lt