Nancy Tillman is the author and illustrator of the bestselling picture book On the Night You Were Born ; its companion journal, The Wonder of You: A Book for Celebrating Baby's First Year ; The Spirit of Christmas ; and the New York Times bestsellers, Wherever You Are, My Love Will Find You and The Crown on Your Head . She also created the mischievous cat Tumford in Tumford the Terrible and Tumford's Rude Noises , and illustrated It's Time to Sleep, My Love by Eric Metaxas. Nancy's mission in creating her books is to convey to children everywhere that "You are loved." She lives in Portland, Oregon.