Nathan Christopher

Nathan Christopher is a former child and aspiring adult who enjoys spreadsheets and—far more useful for his writing—making people laugh. Nathan is the creator of the When They Wrote Back! series of funny holiday picture books, beginning with When Santa Wrote Back! (Sourcebooks Wonderland, 2025). Follow-ups include When the Witch Wrote Back! and When the Easter Bunny Wrote Back! (2026) and When the Leprechaun Wrote Back! (2027). He pens his stories (and his letters to Santa) in Windsor, Canada, where he lives with his wife and children—who ensure endless material and a conveniently sleepless schedule for writing.