So there’s Saint Nicholas, who was known for his generosity, Krampus, who was known for sliding down chimneys, and Odin who had one eye and a horse with eight legs. But none of this explains why Santa Claus sometimes goes by the name Chris Kringle.
This one, I think, we can trace back to Martin Luther. In line with his interest in reforming Christianity, Luther was way ahead of his time when it came to putting the Christ back in Christmas. One of his big concerns around the Christmas season was that Germans were more interested in the feast of Saint Nicholas, which was celebrated on December 6, than in the birth of Christ. To fix this problem, he told everyone to remember the Christkindl or Christ Child.
My guess is that Luther’s exhortations worked for a little while, but when Germans started emigrating to America, the Americans misheard “Christkindl” as Chris Kringle. Somewhere along the line, Chris Kringle got conflated with Santa Claus, and we ended up with this song, which you may recall from your childhood: