The epitaph plaque of Wojciech Wałkowicz was created around 1669. It was created in a stonemasonry centre in Dębnik near Krzeszowice and made of black marble mined there.
Józef Skrabski, "Epitaph plaque of Wojciech Wałkowicz", [in:] "The Sacred Lesser Poland Heritage", 2024, source: https://sdm.upjp2.edu.pl/en/works/epitaph-plaque-of-wojciech-walkowicz