1911 Encyclopædia Britannica/Adalbert (bishop)
ADALBERT (originally Voytech), (c. 950–997), known as the apostle of the Prussians, the son of a Bohemian prince, was born at Libice (Lobnik, Lubik), the ancestral seat near the junction of the Cidlina and the Elbe. He was educated at the monastery of Magdeburg; and in 983 was chosen bishop of Prague. The extreme severity of his rule repelled the Bohemians, whom he vainly strove to wean from their national customs and pagan rites. Discouraged by the ill-success of his ministry, he withdrew to Rome until 993, when, in obedience to the command of the pope, he returned to his own people. Finding little amendment, however, in their course of living, he soon afterwards went again to Rome, and obtained permission from the pope to devote himself to missionary labours, which he carried on chiefly in North Germany and Poland. While preaching in Pomerania (997) he was assassinated by a heathen priest.
See U. Chevalier, Répertoire des sources historiques du moyen âge, Bio.-Bibl. (1905); Bolland, Acta Sanctorum, April 23; H. G. Voigt, Adalbert von Prag (1898), a thoroughly exhaustive monograph.