Adalbert, a bishop of Prague, was martyred in his efforts, to which he had been instigated by the king of Poland Bolesław I the Brave, to convert the Baltic Prussians. He was later made the patron saint of Bohemia, Poland, Hungary, and Prussia. Wikipedia
The definitive Wikipedia entry for Adalbert Of Prague. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Adalbert_of_Prague
