Konstanty Ostrogski

Konstantyn Iwanowicz Ostrozky (c. 1460 – 10 August 1530; ; ; ) was a Ruthenian prince and magnate of the Grand Duchy of Lithuania and later a Grand Hetman of Lithuania from 11 September 1497 until his death. Ostroh began his military career under John I Albert, King of Poland. He took part in successful campaigns against the Tatars and Grand Duchy of Moscow. For his victory near Ochakiv against Mehmed I Giray's forces he was awarded with the title of Grand Hetman of Lithuania. He was the first person to receive this title. However, during a war with Muscovy he was defeated in the Battle of Vedrosha (1500) and held captive for three years. In 1503, he managed to escape and joined king Sigismund I the Old, who allowed him to resume his post as a Hetman. As one of the main military leaders (alongside Polish generals Mikołaj Firlej and Mikołaj Kamieniecki) of the alliance he continued to wage war against the Grand Duchy of Moscow and in 1512 achieved a great victory against the Tatars in the Battle of Wisniowiec. In 1514 another war with the Grand Duchy of Moscow started and Ostroh became the commander in chief of all the Polish and Lithuanian forces (amounting to up to 35,000 soldiers). Among his subordinates were Jerzy Radziwiłł, , Witold Sampoliński and the future Hetman of the Crown Jan Tarnowski. On 8 September 1514 he achieved a significant victory in the Battle of Orsha, defeating the army of Vasili III of Russia. However, in 1517 his attempt to besiege the Russian fortress of Opochka became a serious defeat that destroyed any hopes to reconquer Smolensk. He had two wives: Tatiana Koretska and Aleksandra Słucka. He had two sons: Illia Ostrogski with Koretska, and Konstanty Wasyl Ostrogski with Słucka.