Martin Bucer

Martin Bucer (1491–1551) was a German Reformer who served as the principal architect of the Protestant Reformation in Strasbourg, shaping that city's church order, liturgy, and social welfare institutions over nearly three decades. A former Dominican friar converted to the evangelical cause after hearing Luther at the Heidelberg Disputation of 1518, he became the era's foremost ecumenical mediator, laboring to bridge the Lutheran and Zwinglian divisions over the Eucharist — efforts that bore fruit in the Wittenberg Concord of 1536. He exercised lasting influence over John Calvin, who spent three formative years in Strasbourg under his tutelage, and over Thomas Cranmer, whose liturgical reforms in England bear visible traces of Bucer's thought. Expelled from Strasbourg by the Augsburg Interim in 1549, Bucer accepted Cranmer's invitation to England, where he held the Regius Professorship of Divinity at Cambridge and composed his final and most systematic work, De Regno Christi, a blueprint for godly commonwealth presented to King Edward VI.