Witstack a citizen of Stettin, Pomerania, of some note, flourished in the early part of the 12th century. He was converted and baptized during the first visit of bishop Otto to Stettin, and endeavored to show his zeal for Christianity by fighting against the pagans. He was taken prisoner on a piratical expedition, and for some time kept in chains. Resorting to prayer for consolation in his confinement, he was, as he thought, providentially released, and made his way back to his. home. This deliverance, and some other events of like character, he regarded as the divine call to him to proclaim Christianity to his perishing countrymen. Through his aid Otto was enabled to overcome paganism in Stettin, and place Christianity on a firm footing. See Neander, Hist. of the Church, 4:26.