Duchy of Lithuania Duchy of Lithuania Duchy of Lithuania (; ) was a state-territorial formation of ethnic Lithuanians, that existed from the 13th century until 1413. Most of the time it was a constituent part and a nucleus of the Grand Duchy of Lithuania. Other alternative names of the territorial formation, used in different periods, were Aukštaitija or Land of Lithuania (13th century), Duchy of Vilnius (14th – early 15th centuries), Lithuania Propria or simply Lithuania (in a narrow sense). The formation emerged in the central and eastern part of the present-day Lithuania, known as Aukštaitija, as the Lietuva Land (). It is
Regional Party of Lithuania and White Ruthenia Regional Party of Lithuania and White Ruthenia The Regional Party of Lithuania and White Ruthenia was a political party of major Polish-speaking (mostly of Belarusian origin) nobility and landlords (so called krajowcy) living on the lands of the former Grand Duchy of Lithuania (what is now Republic of Lithuania and Belarus) in early 20th century. The initiator of creation of the party was Raman Skirmunt (he called himself "Belarusian"). In November 1905 he published a manifest of the "Regional party of Lithuania and Ruthenia" that in fact was a party program which demanded introduction of democratic freedoms and especially the