– Clement of Rome.
– Ignatius of Antioch.
– Polycarp of Smyrna.
– Papias of Hierapolis.
– Justin Martyr.
– Irenaeus of Lyons.
– Clement of Alexandria.
– Origen of Alexandria.
Who is the leader of the Protestant Church?
Martin Luther, often called the father of Protestantism, fundamentally changed the Christian world through his force of will and new ideas. He tried passionately to reform the Catholic Church.