Dmitry of Bryansk

[1] Dmitry was the second eldest son of Algirdas, the Grand Duke of Lithuania, and his first wife Maria of Vitebsk.

In 1356, Algirdas took the region of Bryansk, which included Trubetsk and Starodub, from the Principality of Smolensk and granted to his son Dmitrijus to govern it.

[1] After his father's death in 1377, Dmitry supported his elder brother Andrei of Polotsk against their younger half-brother Jogaila, who became the Grand Duke of Lithuania.

Andrei, believing that he is the rightful heir to the throne, organized a coalition against Jogaila, which included Polotsk, Pskov, Livonian Order, and Grand Duchy of Moscow.

[3] Dmitry took a more passive role in the coalition: he did not wage a direct war against Lithuania and did not defend his domain when it was attacked by Moscow's army in 1379.