Prince Konstanty Jacek Lubomirski (1620–1663) was a Polish nobleman (szlachcic). Konstanty was owner of Jarosław estates. He was Krajczy of the Crown and Podczaszy of the Crown since 1658 and starost of Sącz. He died childless. 1620 births 1663 deaths Konstanty Jacek 17th-century Polish landowners