A 10th-century bishop and missionary, he attempted to evangelize Hungary and Poland before being martyred while trying to convert the pagan Prussians.
Saint Adalbert of Prague, born Vojtěch around 956 in Libice, Bohemia, was a major figure in the Christianization of Central Europe. Born into the powerful Slavník dynasty, he was educated in Magdeburg by Archbishop Adalbert, whose name he adopted. Becoming Bishop of Prague in 982, he clashed with persistent pagan customs and the power of the local nobility. After two attempts to resign his office and retire to the Abbey of Saints Boniface and Alexius in Rome, he was sent on an evangelizing mission to the Baltic region. It was during this mission, while attempting to convert the pagan Prussians, that he was martyred on April 23, 997, near Truso (now in Poland). His relics were first interred in Gniezno and later partially transferred to St. Vitus Cathedral in Prague. He is venerated as the patron saint of Bohemia, Poland, Hungary, and Prussia.