The Marburg Colloquy, Marburg Castle, Marburg, Hesse, Germany 1529. A meeting which attempted to solve a disputation between Martin Luther and Ulrich Zwingli over the Real Presence of Christ in the Lord's Supper. Martin Luther, 1483 - 1546. German professor of theology, composer, priest, monk and a seminal figure in the Protestant Reformation. Huldrych Zwingli aka Ulrich Zwingli, 1484 - 1531. Leader of the Reformation in Switzerland. From Hutchinson's History of the Nations, published 1915.