| Katarzyna Ostrogska | ||
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| Noble Family | Ostrogski | |
| Coat of Arms | Ostrogski | |
| Coat of Arms | Ostrogski | |
| Parents | Konstanty Wasyl Ostrogski Zofia Tarnowska |
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| Consorts | Krzysztof Mikołaj "the Thunderbolt" Radziwiłł | |
| Children | with Krzysztof Mikołaj "the Thunderbolt" Radziwiłł Janusz Radziwiłł |
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| Date of Birth | 1560 | |
| Place of Birth | ? | |
| Date of Death | August 3, 1579 | |
| Place of Death | Vilnius | |
Princess Katarzyna Ostrogska (Lithuanian: Kotryna Ostrogiškaitė) (1560–1579) was a Polish–Lithuanian noble lady
She married Krzysztof Mikołaj "the Thunderbolt" Radziwiłł on July 22, 1578 in Dubno.