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The House of Zasławski (plural Zasławscy) was the name of a PolishRuthenian noble family and a cadet branch of the Ostrogski family. The Zasławski family had its power base in Volhynia, Crown of the Kingdom of Poland (today in Ukraine), and traced its origins to a branch of the Rurikids that took its name from the Iziaslav. Due to their relation to the Rurikids, the Zasławski family held the title of Knyaz (prince).

POL COA Ostrogski.svg
Current regionPoland
Place of originIziaslav
MembersAleksander Zasławski
Władysław Zasławski
Connected familiesOstrogski family
Estate(s)Starozasławski Castle
Possessions of Ostrogski are marked in pink; Zasławski (partially) in red


The Zasławski family was one of the three major families in the Polish–Lithuanian Commonwealth to trace its origins to either Kaributas (they used Korybut coat of arms) or, according to modern historical interpretations, the Ruthenian Rurikids; the other two families were the Ostrogski family and the Wiśniowiecki family. The Zasławski family was sometimes seen as a junior line of the Ostrogoski family.

After the death in 1620 of the last male heir of the Ostrogoski family, Janusz Ostrogski, many of the Ostrogoski possessions were inherited by the Zasławcy. However, the Zasławski family faced a similar fate when their last male heir, Aleksander Janusz Zasławski, died in 1682. Their huge possessions passed to the Lubomirski family (due to their marriage with Aleksander's sister, Teofilia Ludwika Zasławska) and other families of Polish szlachta. A complicated litigation concerning the Ostrogski inheritance continued until the Russian Empire annexed Poland during the Partitions.

Notable membersEdit

See alsoEdit

External linksEdit

  • Marek, Miroslav. "Zasławski genealogy". Genealogy.EU.
  • Zaslawski at the Encyclopedia of Ukraine
  • Zaslavski at the Handbook on history of Ukraine