Jan "Ciężki" Tarnowski (c. 1479–1527) was a Polish nobleman (szlachcic). Jan was castellan of Biecz and Sącz, starost of Pilzno. He had one child, Dorota Tarnowska. 1470s births 1527 deaths 15th-century Polish nobility Jan "Ciężki" 16th-century Polish nobility