Unfortunately, research on furnishings of the St. Martin's church carried out so far, due to lack of archival records on the constructors, does not even try to determine a circle of potential authors of the reredoses and its sculptural decor. The sculpture was created in the second half of the 18th century and it depicts St. Luke. The saint was a converted pagan from Syria, who was christianed circa 42. He wrote the Gospel; died probably at the age of 84. According to tradition, he was supposed to be a painter and create the first painting of the Virgin Mary. He is the patron saint of Spain, painters, doctors and butchers.
Maria Działo, "Sculpture of St. Luke", [in:] "The Sacred Lesser Poland Heritage", 2021, source: https://sdm.upjp2.edu.pl/en/works/sculpture-of-st-luke