Balthasar Hubmaier was a prominent Anabaptist leader and theologian in the early 16th century. Born around 1480 in Friedrichshafen, Germany, he became known for his strong advocacy of adult baptism and religious freedom. Hubmaier's writings and sermons emphasized the importance of personal faith and the separation of church and state. He played a significant role in the Radical Reformation, which sought to reform Christianity beyond the traditional Protestant Reformation. Hubmaier faced persecution for his beliefs, leading to his arrest and execution in 1528. His contributions to Anabaptism continue to influence discussions on religious liberty and the nature of faith today.