The Swiss Anabaptist Movement is founded when Conrad Grebel, Felix Manz, George Blaurock, and about a dozen others baptize each other in the home of Manz's mother in Zürich, breaking a thousand-year tradition of church-state union.

Felix Manz, a leader of the Anabaptist congregation in Zürich, is executed by drowning.

The Anabaptist state of Münster is conquered and disbanded.