Feodor Ostrogski
Prince Feodor Ostrogski was a magnate in Volhynia of Rurikid stock, son of Danylo Ostrozky. In some sources he is called Teodor, Fedko or Frederic. He was active in the Hussite Wars and assisted Sigismund Korybut. Wikipedia
Born: 1360
Died: 1446 (age 86 years), Kiev Pechersk Lavra, Kyiv, Ukraine
Grandchildren: Iwan Ostrogski, Yuriy Zaslavsky, and Agrypina Ostrogska
Great grandchildren: Konstanty Ostrogski, Michał Ostrogski, Jan Zaslawski, and more
Great-grandparents: Mstyslav Danielvich and Roman Danylovych
Children: Wasyl Ostrogski and Dashko Ostrozky
Parents: Danylo Ostrozky