Konstanty Iwanowicz Ostrogski (c. 1460– August 10 1530) (Lithuanian: Konstantinas Ostrogiškis also known under his Ruthenian name Konstantin Ivanovich Ostrozhsky and modern Belarusian transliteration Kanstancin Astrožski) was a magnate of the Grand Duchy of Lithuania and later a Grand Hetman of Lithuania since September 11 1497 until his death.
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