Huldrych Zwingli was a Swiss Protestant reformer born in 1484 in Wildhaus, Switzerland. He played a key role in the Reformation, advocating for religious reforms that emphasized scripture over tradition. Zwingli's teachings focused on the authority of the Bible and the importance of faith in Christ. Zwingli became the pastor of the Grossmünster in Zurich and led the city in breaking away from the Catholic Church. He is known for his opposition to the Mass and the veneration of saints. Zwingli's ideas influenced the development of Reformed Christianity and laid the groundwork for future reformers like John Calvin.