Eldest son of Wojciech, a poor shoemaker, and Wiktoria Tomczyk. With the help of his parish priest, Ludwik obtained a good education. Joined the Franciscan Conventual Friars in 1926, taking the name Pius. Studied in Franciscan seminaries in Sanok, then Lviv and finally Krakow, Poland. Ordained on 23 June 1935. Noted confessor at the Franciscan convent in Krosno, Poland. At the request of Saint Maximilian Kolbe, Father Pius was transferred to the convent at Niepokalanów, Poland in August 1936 where he worked in a number of positions, including editor of the magazines Knight of the Immaculate, Little Knight of the Immaculate and Miles Immaculatae, all the while continuing to serve as confessor to his brother friars. Wrote a number of works including a noted book of Mariology. Imprisoned by invading German troops on 19 September 1939 and transferred to several prisons, finally ending at the Auschwitz forced labour concentration camp. He continued his vocation as confessor to other prisoners. Martyred in the Nazi persecutions of World War II.
- tortured to death during the night of 12 to 13 December 1941 in Oświęcim (a.k.a. Auschwitz), Małopolskie, Nazi-occupied Poland
- “Blessed Ludwik Bartosik“. CatholicSaints.Info. 8 December 2015. Web. 21 October 2016. <>