There is an awesome portrait of him HERE, but I can't post it because it isn't in the public domain. Sigh. Still, you can see it for yourself by clicking on the link.
I am fascinated by the story of Charles and his sister Mary. For a brief overview, see HERE. I am in the middle of researching this sibling pair, and I will probably bore you with blog posts about them as time goes on. Sorry in advance. :)