Martin Bucer

Martin Bucer (born Martin Butzer, 11 November 1491 – 28 February 1551) was an Alsatian Protestant reformer who worked mainly in Strasbourg. His ideas shaped Lutheran, Anglican, and Reformed theology and practices. He started out as a Dominican friar, but after meeting Martin Luther in 1518, he had his monastic vows canceled and began pushing for reform, backed by Franz von Sickingen. When he tried to reform the church in Wissembourg, he was excommunicated by the Catholic Church and had to escape to Strasbourg.

In Strasbourg, Bucer joined a reform team that included Matthew Zell, Wolfgang Capito, and Caspar Hedio. He often acted as a go-between for Martin Luther and Huldrych Zwingli, who disagreed about the Eucharist. Later, Bucer worked to get common statements of faith, like the Tetrapolitan Confession and the Wittenberg Concord, and he collaborated closely with Philipp Melanchthon on the latter.

Bucer thought Catholics in the Holy Roman Empire might be won over to the Reformation. He took part in a series of conferences called by Emperor Charles V, hoping to unite Protestants and Catholics into a single German national church independent of Rome. That never happened—political tensions led to the Schmalkaldic War and a rollback of Protestantism in the Empire. In 1548, under pressure, Bucer signed the Augsburg Interim, which brought back some Catholic practices. He kept pushing for reforms, but when Strasbourg accepted the Interim, he was forced to leave.

In 1549, Bucer was exiled to England. There, under Thomas Cranmer’s guidance, he helped shape the Edwardine Ordinals and the second revision of the Book of Common Prayer. He died in Cambridge, England, at 59. Though he never founded his own denomination, many Protestant groups later claimed him. He is remembered as an early advocate of ecumenism.

The Holy Roman Empire of the 1500s was split into many princely and city states, which limited the emperor’s power. This fragmentation made the Reformation possible, since individual states could protect reformers. In Saxony, Martin Luther had the backing of Elector Frederick III and his successors John and John Frederick. Philip I, Landgrave of Hesse—whose territory lay between Saxony and the Rhine—also supported reform and played a big role in the lives of both Luther and Bucer. Emperor Charles V was often busy with wars against France, the Ottoman Empire, and in Italy, so political rivalries among these players heavily shaped church developments.

Besides princely states, free imperial cities—nominally under the emperor but actually run by councils acting like sovereign governments—were scattered across the Empire. As the Reformation took hold, many cities saw clashes between local reformers and conservative magistrates. Bucer began his work in one such free imperial city: Strasbourg. Located on the Empire’s western edge, Strasbourg was closely tied to Swiss cities that had broken away from imperial control. Some of those cities had adopted a reformed religion distinct from Lutheranism, where humanist social ideas and community ethics were more important. Strasbourg, along with a group of free imperial cities in southern and western Germany, followed this pattern. It was governed by a complex local system largely controlled by a few powerful families and wealthy guildsmen. In Bucer’s time, social unrest grew as lower-level artisans resented their lack of mobility and the widening wealth gap. Citizens might not have planned a revolution, but they were open to new ideas that could change their lives.

Martin Bucer was born in Sélestat (Schlettstadt), Alsace, a free imperial city. His father and grandfather, both named Claus Butzer, were coopers (barrelmakers). Almost nothing is known about his mother. Bucer likely attended Sélestat’s prestigious Latin school, where artisans sent their children. He finished his studies in the summer of 1507 and became a novice in the Dominican Order. He later said his grandfather forced him into it. After a year, he was consecrated as an acolyte in Strasbourg’s Williamite church, and he took his full vows as a Dominican friar. In 1510, he was ordained a deacon.

By 1515, Bucer was studying theology at the Dominican monastery in Heidelberg. The next year, he took a dogmatics course in Mainz, where he was ordained a priest, then returned to Heidelberg in January 1517 to enroll at the university. Around this time, humanism began to influence him, and he started buying books from Johannes Froben’s press, including works by the great humanist Erasmus. A 1518 inventory of his books lists major writings of Thomas Aquinas, a key figure in medieval scholasticism within the Dominican Order.

In April 1518, Johannes von Staupitz, the Augustinians’ vicar-general, invited Martin Luther to defend his theology at the Heidelberg Disputation. There Bucer met Luther for the first time. In a long letter to his mentor Beatus Rhenanus, Bucer described what he learned and commented on several of Luther’s Ninety-five Theses. He mostly agreed with them and thought Luther’s and Erasmus’s ideas were compatible. Because meeting Luther carried risks, he asked Rhenanus to keep the letter out of the wrong hands. He also wrote his will.