This document summarizes information about several important figures during the Protestant Reformation period: Suleiman the Great of the Ottoman Empire who rivaled with Charles V and allied with Francis I; Charles V who opposed the Reformation as Holy Roman Emperor; Francis I of France who allied with Suleiman; and Henry VIII of England who declared himself head of the Anglican Church. It also provides details about Martin Luther, the leader of the Protestant Reformation, and the Diet of Worms where he was declared a heretic for his writings challenging Catholic doctrine.