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Jan Kazimierz Umiastowski
Jan Kazimierz Umiastowski
Coat of armsRoch III
Died1659
Noble familyUmiastowski
ConsortHalszka princess Ogiński
FatherJan comes von Nandelstädt Umiastowski

Jan Kazimierz Umiastowski (died 1659) was a Polish szlachcic from family - comites Pierzchała-Umiastowski.

He was District Writer of Brześć since 1648, District Judge and Podkomorzy (Chamberlain) of Brześć; since 1654.

Marshal of the Sejm (nadzwyczajnego) on May 19, - June 20, 1655 in Warsaw.