House of Jagiellon

State · 1450–1571 CE · at its largest around 1482 CE

Lands ruled by the Jagiellonian dynasty, descended from Jogaila of Lithuania, whose members at various times held the crowns of Poland, Lithuania, Bohemia and Hungary.

On its lands while it lasted

Königsberg (1255–1945 CE): Capital of Duchy of Prussia (1526–1618), Brandenburg-Prussia (1619–1701).
Ivan III (1440 CE – 1505 CE): Grand Prince of Moscow who gathered the Russian lands, annexed Novgorod and ended the Golden Horde's overlordship.
Nicolaus Copernicus (1473 CE – 1543 CE): Polish astronomer and canon of Frombork in Royal Prussia who proposed a Sun-centred model of the universe in De revolutionibus orbium coelestium, published in 1543, the year of his death.
Great Stand on the Ugra River (1480 CE): Standoff between Ivan III and Khan Akhmat that ended with the Horde's withdrawal, traditionally marking the end of Mongol rule over Russia.
Siege of Vienna (1529) (1529 CE): Suleiman the Magnificent besieged Vienna in autumn 1529 but withdrew after failing to take the city. It marked the limit of Ottoman expansion into central Europe for over 150 years.
Ivan the Terrible (1530 CE – 1584 CE): Grand Prince of Moscow who in 1547 became the first to be crowned Tsar of all Russia. He conquered Kazan and Astrakhan and ruled through the terror of the oprichnina.
Copernican heliocentrism (1543 CE): Nicolaus Copernicus, a canon at Frombork, published De revolutionibus in 1543, placing the Sun rather than the Earth at the centre of the universe. It began the Scientific Revolution.
Saint Basil's Cathedral (1555 CE): Built on Red Square in Moscow between 1555 and 1561 on the orders of Ivan the Terrible to commemorate the capture of Kazan. Its colourful domes are a symbol of Russia.
Union of Lublin (1569 CE): Signed in Lublin in 1569, this act merged the Kingdom of Poland and the Grand Duchy of Lithuania into a single Polish–Lithuanian Commonwealth.