He was a 19th Century theologian and creator of the "Calvinism" theology that dismisses the idea of free will and really hones in on predestination and the "election" of the saints who will go to heaven.
Personally, I will vote FF, though I don't agree with his doctrine in full. I follow some of his theology, such as the TULIP doctrine, but I believe there is free will.
I'd check the history book twice 
16th Century, Jeff. Big difference.
You beat me to it.
He beat everybody to it. Anyhow, Calvin was a major HP.
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