There are several books that begin with "Who Was...Leonardo da Vinci? Amelia Ereheart(sp), Sacajawea..." Etc, there are about 15 different ones. These are not historical fiction, (they are expository), but they are wonderful books that read like novels. I am doing da Vinci in my class right now, and I knew it was going to be high interest, but I had no idea the kind of effect it would really have. Everybody loves reading now. As one student put it, "Get out our Leonardo da Vinci books? I love Leonardo da Vinci." He repeated this about three times.
Check one out from you school library. You will begin lesson planning as you read.