Well, its easy to see who they werent.
.................
Who do you rule out?
Stanley Ann Dunham is not the mother.
Neither the Kenyan Obama nor Frank Marshall Davis is the father.
And for the ultra kook fringe - Madelyn Dunham, Stanley Armour Dunham, and anonymous bar maids were also not part of the genetic makeup of Zero.
More to the point, considering you've spent quite some time on the subject, what is your opinion, and do you actually have one?