Martin Luther Excommunicated
Jan 3 Martin Luther is excommunicated by Pope Leo X from the Roman Catholic Church for failing to recant parts of his Ninety-five Theses which started the Protestant Reformation
Diet of Worms
Jan 28 Holy Roman Emperor Charles V opens the Diet of Worms in Worms, Germany which lasts until May 25. Produced the "Edict of Worms" which denounced Martin Luther.
Gregory I
Gregory XIII
Julius II
Julius III
Leo X
Pius V