Career
Interrex in 1586–1587, before the coronation of Sigismund III Vasa. Karnkowski chaired the sejm commission which prepared so called "Karnkowski"s Statutes" approved by sejm in 1570. He opposed attempts of reforming the way of election made by January Zamoyski and proposals of raising up taxes for army.
Stanisław Karnkowski is one of the personas on the famous painting by January Matejko: the sermons of Piotr Skarga.