The Whisper in the Ruins by Lisa M. Hendey

Patrick is at it again—Chime Traveling, that is. This time he's in Assisi with a brave young man named Francis. Francis wants to follow God's call, but his father is angry with him and forces Francis and Patrick to run and hide! Will they be able to obey God? Book 3 in the Chime Travelers series, exciting new chapter books ideal for children in grades 2-4.