Catholic Encyclopedia - Bl. Vincent Kadlubek, bishop of Cracow, resigned his office and became the first Pole to join the Cistercians. He died in 1223. www.newadvent.org/cathen/15438a.htm
Catholic Online - Short biography of Vincent Kadlubek. saints.catholic.org/saints/vincentkadlubek.html
For All the Saints - Brief biography of Vincent Kadlubeck. He was beatified in 1764, and not canonized as this article would lead you to think. users.erols.com/saintpat/ss/0308.htm#vinc
