[KayEyeDoubleDee]

It's also possible that his legal name is "Dunham" - one aspect of the working theory is that there was a second legal proceeding, in the early 1970's, wherein the grandparents, Madelyn Payne Dunham, and Stanley Armour Dunham, became the legal guardians, thereby allowing "Obama" to attend high school as "Barry Dunham":

Obama Citizenship Controversy - Did Obama Travel to Pakistan on an Indonesian Passport? A Summary.
http://www.freerepublic.com/focus/news/2059717/posts

The interesting aspect of that theory is that it explains the infamous "airport" photographs - Obama Sr would have had to fly in from Kenya to testify that he was the birth father, not Lolo Soetoro.

[Dajjal]

Your link is to an older theory. It may be true, but see Post# 172 for TexasDarlin’s current theory that whatever his childhood Hawaiian name was, he never legally changed it to the Barack Obama he has used as an adult.