Have you seen this link for the family tree of Obama?
http://www.suntimes.com/images/cds/MP3/obamatree.pdf
By the way it was often reported that Ralph Waldo Emerson’s wife, Ruth Lucille Armour, committed suicide but in fact she actually died of food poisoning as was reported in an earlier FR thread in 2009. If I can find the thread or the article in which I found that particular story I will post it for you. The story of suicide was yet another myth of the Dunham family being poilte.
Here is a link to the story in which it is mentioned that Ruth Dunham actually died of food poisoning the day after Thanksgiving in 1926 and it was specifically mentioned in her obituary in the local paper. Another myth is mentioned in the same article which says that Stanley Armour Dunham was kicked out of school for punching the principal in the nose. This story is also incorrect, but what else could we expect from this family? From my research I discovered an interview with one of Stanley Armour’s classmates who mentioned that he did not have enough credits to graduate therefore he had to return to school the following year to complete further courses to graduate. It gets quite interesting trying to sort out the truth and the fiction in this family so it is no wonder that Stanley Ann had a reputation as a consumate liar! She came by it naturally, children do indeed learn what they live.