John Frederick I was a notable figure in the history of the Electorate of Saxony, serving as its elector from 1532 until his death in 1547. He was a key supporter of the Lutheran Reformation, which aimed to reform the practices of the Roman Catholic Church. His leadership helped establish Protestantism in his region. During his reign, John Frederick I faced significant challenges, including conflicts with the Holy Roman Empire. He was captured at the Battle of Muhlberg in 1547, leading to his imprisonment and the loss of his electoral title. Despite these setbacks, he remained a symbol of Protestant resistance.