Algirdas was Grand Duke of Lithuania from 1345 to 1377. With the help of his brother Kęstutis, he created an empire stretching from the present Baltic states to the Black Sea and to within 80 kilometr
Fragment from medal by Juozas Kalinauskas
Drawing of Grand Duke Algirdas's seal from the 1366 treaty
Algirdas with Gediminas' Cap, painted in 1578
Algirdas (left) on the Millennium of Russia monument in Veliky Novgorod
Jogaila, later Władysław II Jagiełło, was Grand Duke of Lithuania beginning in 1377 and King of Poland from 1386 until his death. As Grand Duke, he ruled Lithuania from 1377 to 1381 and from 1382 to 1
Algirdas
…However, Algirdas apparently changed his mind briefly before his death and he installed as his new Crown Prince one of his sons from the second marriage, Jogaila, who ultimately inherited the throne. Jogaila was a son of Algirdas by his second wife, Uliana, though it's debated whether he was the eldest one…
King Władysław II Jagiełło, detail of the Triptych of Our Lady of Sorrows in the Wawel Cathedral
Early coin of the Grand Duke of Lithuania Jogaila with a lion, minted at the Vilnius Mint between 1386 and 1387
Seal of Władysław II Jagiełło with his title (in Latin) as King in Lithuania, used in 1377–1386, before becoming the King of Poland in 1386
Lithuanian Denar of Jogaila (minted in 1388–1392) with Vytis (Pahonia)