Švitrigaila [SEP] father
Švitrigaila
Švitrigaila (before 1370 – 10 February 1452) was the Grand Duke of Lithuania from 1430 to 1432. He spent most of his life in largely unsuccessful dynastic struggles against his cousins Vytautas and Sigismund Kęstutaitis.
Early life and Vitebsk rebellion.
Švitrigaila was born to Algirdas, Grand Duke of Lithuania, and his second wife Uliana of Tver. His date of birth is unknown, but it is believed that he was the youngest or second youngest son of Algirdas. He first appeared in politics in October 1382 when
to contain growing influence and ambition of Švitrigaila. According to Johann von Posilge, Švitrigaila was forced to sign the Pact. However, just a month later he wrote to Siemowit IV of Masovia trying to form an alliance against Vytautas.
Vytautas-instigated the First Samogitian Uprising against the Teutonic Knights started in March 1401. In August, Yury of Smolensk and his father-in-law Oleg II of Ryazan started a rebellion to retake the Principality of Smolensk. Švitrigaila decided to take advantage of these conflicts. In January 1402