In some churches, especially Protestant churches in the United States, ordained ministers are often addressed as Pastor (as in Pastor John or Pastor Smith). Father as an informal title is used for Roman Catholic, Orthodox and Old Catholic priests and for many priests of the Anglican and Lutheran churches.
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.