Katarzyna Ostrogska (1560–1579)
Princess Kateryna Ostrozka was a Polish–Lithuanian noblewoman. She was famed for the Siege of Dubna in 1577, which was sieged by nomads with the purpose of take to her prisoner.
She married Krzysztof Mikołaj "the Thunderbolt" Radziwiłł on 22 July 1578 in Dubno.