Adam of the Road
Door in the Wall
Those are some historic fiction set in that time. The library system should have at least the first two. Also, check and see if there is an SCA group around you (Society for Creative Anachronism) as they should have some resources.
Where are you in Oklahoma, anyway? Depending on where you are, I think I have a curriculum I'm not using right now that covers the Rennaisance. It is set for grades 4-8, so you might have to do some tweaking for it.