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Eberhard Billick was a German theologian instrumental in keeping the city of Cologne Catholic during the Reformation. Billick was an opponent of the Reformation, born 1499 or 1500 at Cologne; died there 12 January, 1557. Of a family which gave a number of prominent men to the Carmelites of Cologne, Eberhard entered the Carmelite Order in 1513, took his vows in 1514, became a priest and master of students in 1525, and reader of divinity in 1526; he matriculated at the University of Cologne in 1528.