Jan Kazimierz Umiastowski


Jan Kazimierz Umiastowski was a Polish szlachcic from family - comites Pierzchała-Umiastowski.
He was District Writer of Brześć since 1648, District Judge and Podkomorzy of Brześć; since 1654.
Marshal of the Sejm on May 19, - June 20, 1655 in Warsaw.