The side altar in the church in Osielec was probably built by Andrzej Czesacz around the year 1869 in the Neo-Baroque style. Its structure is based on models developed in modern art. The altar's painting decoration was created by Wojciech Eljasz, a Cracovian painter. The main area of the altar features his painting titled "St. Michael the Archangel", and the altar finial is crowned with another one, titled. "St. Sophia".
Maria Działo, "Side altar", [in:] "The Sacred Lesser Poland Heritage", 2023, source: https://sdm.upjp2.edu.pl/en/works/side-altar-41