Andrei of Polotsk

Andrei of Polotsk (c. 1325–1399), eldest son of Grand Duke Algirdas and Maria of Vitebsk, ruled Polotsk from 1342 and Pskov until 1348. He campaigned against the Livonian Order and joined his father's marches on Moscow in 1368 and 1370. When Algirdas died in 1377, the throne passed to his half-brother Jogaila.

Andrei contested it, fighting for Dmitry of Moscow at Kulikovo in 1380 and later allying with the Teutonic Order against the Union of Krewo. Captured at Polotsk in 1387, he was imprisoned in Poland and later fell fighting the Tatars at the Vorskla River in 1399.