Saint Nicholas is not Santa Claus, but he’s now inescapably bound up with Santa’s story and identity. Nicholas was the bishop of Myra, a town in what we no call Turkey, and we don’t have any surviving sources about him from his lifetime. The first major biography we have of Nicholas dates from 800s, centuries after his death, and stories about him are likely fictional or exaggerated. Those stories tell of a man who expelled demons, stayed executions, slapped the Christian heretic Arius (pictured below) and showed great generosity to his fellow citizens of Myra.