Dominican missionary called “the Apostle of Poland.” Born in Oppeln, Poland, he received the Dominican habit in 1217 or 1218 from St. Dominic. Hyacinth preached in Poland, Pomerania, Denmark, Prussia, Lithuania, Sweden, Norway, Russia, China, and Tibet. He died in Cracow, Poland, on August 15. Hyacinth was canonized in 1594. His feast is now confined to local calendars.