Report on a genius.. who would be interesting?

I have to do a report for English on a genius that interests me. I'm interested in geniuses who have conspiracies around them or ones that little quirks/crazy things about them. Maybe like people that were so smart, it drove them to be insane. I wanted to do either Houdini or Tesla, but both were already taken. Any other ideas of geniuses that are interesting and who have lives and contributions that make you think a little bit? I don't care what field or category they were in, either. Thanks (: