Johannes Oecolampadius was a German Protestant reformer in the Calvinist tradition from the Electoral Palatinate. He was the leader of the Protestant faction in the Baden Disputation of 1526, and he was one of the founders of Protestant theology, engaging in disputes with Erasmus, Huldrych Zwingli, Martin Luther and Martin Bucer. Calvin adopted his view on the Eucharist dispute.
Posthumous portrait by Hans Asper, before 1550
Johannes Œcolampadius by Hans Asper
Statue of Oecolampadius at Basel Minster
Reformed Christianity, also called Calvinism, is a major branch of Protestantism that began during the sixteenth-century Protestant Reformation, a schism in the Western Church. In the modern day, it is largely represented by the Continental, Presbyterian, and Congregational traditions, as well as parts of the Anglican and Baptist traditions.
Statues of William Farel, John Calvin, Theodore Beza, and John Knox, influential theologians in developing the Reformed faith, at the Reformation Wall in Geneva
Calvin preached at St. Pierre Cathedral in Geneva.
Early Calvinism was known for simple, unadorned churches as depicted in this 1661 portrait of the interior of the Oude Kerk, Amsterdam
Fall of Man by Jacob Jordaens
