Seminarian in the diocese of Wlaoclawek, Poland. Arrested by Nazi officials in 1939 along with his seminary teachers, and lodged in the concentration camp at Dachau, Bavaria, Germany, which had a special section for Catholic clergy. He was offered his freedom if he would renounce his calling to the priesthood; he declined. Martyr.
- “Blessed Bronislao Kostkowski“. CatholicSaints.Info. 26 November 2013. Web. 23 October 2016. <>