The epitaph plaque commemorates Kazimiez Haller - the son of Karol Haller who was the brother of general Józef Haller - murdered on 7 May 1942 in the concentration camp during World War II.
Agata Felczyńska , "Epitaph plaque of Kaziemirz Haller", [in:] "The Sacred Lesser Poland Heritage", 2025, source: https://sdm.upjp2.edu.pl/en/works/epitaph-plaque-of-kaziemirz-haller