Demetrius I Starshy

Dmitry of Bryansk or Dmitry the Elder (, , died on 12 August 1399 in the Battle of the Vorskla River) was the Lithuanian prince of Bryansk from 1356 to 1379 and from 1388 to 1399. Dmitry was the second eldest son of Algirdas, the grand duke of Lithuania, and his first wife.

Life In 1356, Algird took the region of Bryansk, which included Trubetsk and Starodub, from the Principality of Smolensk and granted it to his son Dmitry to govern. The territory was in the far northeast from the heartlands of the Grand Duchy of Lithuania and bordered the Principality of Moscow. In 1370, Dmitry Donskoy, the grand prince of Moscow, unsuccessfully attempted to conquer the territory. In 1372, Dmitry witnessed the Treaty of Lyubutsk between Algird and Dmitry Donskoi. 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.