Trubchevsk

Trubchevsk was a Rurikid principality centered on the town of the same name. First recorded as an appanage of Novgorod-Seversk in 1185, it retained local princes under Bryansk after the Mongol invasion and was still its vassal in 1337.

After Lithuania took Bryansk in 1356, Trubchevsk passed to Dmitry Olgerdovich, ancestor of the Trubetskoy family. His descendants joined Ivan III with their lands during the war of 1500–1503. Ivan the Terrible abolished the principality in 1566; the Russian commander Alexey Trubetskoy reconquered it in 1654 and briefly received it as a private appanage in 1660.