I am working on a children's picture book as a personal project (publication goal, but I am really at the beginning), that is a retelling of a 13th century story. The original story ends with love lost and (to be honest) fatality (via a duel). I would like to stick to the original story, retold for picture book format, however I am wondering how the ending will be taken? It's an ancient, culturally-based tale, with ties to real history, and I think it could be done really well (enter blood/sweat/tears), and has a lot of merit, but I'm not sure how a sad ending of this type would be taken amongst kids, parents, or possible publishers? I would have loved it as a child, but I have been a nonfiction junky all along.
Any input would be greatly appreciated. :)