Protestantism in Switzerland
The Reformed branch of Protestantism in Switzerland was started in Zürich by Huldrych Zwingli and spread within a few years to Basel (Johannes Oecolampadius), Bern (Berchtold Haller and Niklaus Manuel), St. Gallen,(Joachim Vadian), to cities in southern Germany and via Alsace (Martin Bucer) to France.
Source: Wikipedia — Protestantism in Switzerland (CC BY-SA 4.0)