Principality of Tver
The principality was located approximately in the area currently occupied by Tver Oblast and the eastern part of Smolensk Oblast of Russia . 
<triplet> Tver Oblast <subj> Russia <obj> country <triplet> Smolensk Oblast <subj> Russia <obj> country <triplet> Russia <subj> Tver Oblast <obj> contains administrative territorial entity <subj> Smolensk Oblast <obj> contains administrative territorial entity