Boleslas IV. duke of Poland, son of that Boleslas who had married the sister of Henry IV. having succeeded his elder brother Ladislas II. and conquered part of Pomerania, entreated St. Otho to undertake a mission among the idolaters of that country. The good bishop having settled his own diocess in good order, and obtained of pope Honorius II. a commission for that purpose, took with him a considerable number of zealous priests and catechists, and passed through Poland into Prussia, and thence into eastern Pomerania. He was met by Uratislas II. duke of Upper Pomerania, who received the sacrament of baptism with the greatest part of his people in 1124. St. Otho returned to Bamberg for Easter the following year, having appointed priests every where to attend the new converts, and finish the work he had so happily begun. The towns of Stetin and Julin having again relapsed into idolatry, St. Otho, with a second blessing of pope Honorius II. returned into Pomerania in 1128, brought those cities back to the faith, and through innumerable hardships and dangers carried the light of the gospel into Noim, and other remote barbarous provinces. He returned again to the care of his own flock, amidst which he died the death of the saints on the 30th of June, 1139. He was buried on the 2d of July, on which day he is commemorated in the Roman Martyrology. He was canonized by Clement III. in 1189. The rich shrine which contains his sacred remains is preserved in the electoral treasury at Hanover. See Thesaurus Reliquiarum Electoris Brunswico-Luneburgensis, folio, printed at Hanover in 1713. See also the accurate life of this saint in the latter editions of Surius, and in Acta Sanctorum, by the Bollandists, t. 1, Julii. ST. MONEGONDES, A RECLUSE AT TOURS.