John Calvin lived during the establishment of the reformed church, and he faced challenges and attacks by the Roman Catholic Church. (6-10 years).
A Puritan preacher who lived in England, John Owen endured religios persecution as he taught and wrote of the truth of God's love. (6-10 years).
Jonathan Edwards was a great thinker and theologian in colonial America. He even prreached a sermon about a spider dangling over a fire. (6-10 years).