St. Adalbert of Prague (Czech: About this sound Vojtěch , Polish: Wojciech, Latin: Adalbertus, Voitecus; c. 956 – 23 April 997), was a Bohemian missionary and Christian saint. He was the Bishop of Prague and a missionary to the Hungarians, Poles, and Prussians, who was martyred in his efforts to convert the Baltic Prussians to Christianity. St. Adalbert was later declared the patron saint of Bohemia, Poland, Hungary and the former polity of Prussia.