My brother is a Cris so the name has been close to me all my life. Lately we had a number of Cris's join our Judo Club ( JAC's ) the lead coach and co founder along with his wife Jo is a Chris.
When I first moved to London I had a friend Kris Genius he was the first i knew to spell it with a K perhaps a nod KRS1. I've always associated that spelling with Hip Hop.
After finishing uni I spent a summer in The US it was there I first read the book Communion Christopher Walken starred in the film adaptation.