He definitely looks like a Dunham. of course theres always the long shot theory that Daddums Dunham had a fling with a local girl of color that resulted in young Barry (I just heard about that one recently.)
![Photobucket](http://i19.photobucket.com/albums/b164/digger48/obama/obama-with-grandfather.jpg)
![Photobucket](http://i19.photobucket.com/albums/b164/digger48/obama/FrankDavisMarshall.jpg)
That kid in the back looks like he's gonna bean 'em with his boomerang