Michael Sattler was a significant figure in the early Protestant Reformation, known for his role in the Anabaptist movement. Born around 1490 in Germany, he became a leader who advocated for adult baptism and a separation from state churches, emphasizing a personal faith experience. Sattler is best known for the Schleitheim Confession, a foundational document for Anabaptists, which outlined key beliefs such as nonviolence and community living. His commitment to these principles ultimately led to his arrest and execution in 1527, making him a martyr for the Anabaptist cause.