Виленское воеводство
Scholars often use term "Lithuania proper" to refer to lands inhabited by ethnic Lithuanians as opposed to lands controlled by the Grand Duchy of Lithuania inhabited by Ruthenians (ancestors of modern Belarusians and Ukrainians), Russians, Poles, Lithuanian Jews or many other nationalities. Already during the Grand Duchy times, Lithuania Proper was a term designated to land where Lithuanians live. Administratively it consisted of Vilnius Voivodeship, Trakai Voivodeship and the Duchy of Samogitia. This division continued even after Polish-Lithuanian Commonwealth was partitioned. Thus Grand Duchy of Lithuania was divided into such historical regions: Samogitia, Lithuania Proper and Ruthenia.