Wasn’t 1963 the year that Obama Sr. was about to get kicked out of the country while at Harvard? Could he have contacted StanAnn and pleaded with her to say they were married so he could stay in the country?
On August 31, 1961, Obama Senior told Immigration and Naturalization Service Officer William Wood that he had a United States citizen (USC) spouse and a son named Barack Hussein Obama II, born on August 4, 1961 in Honolulu, and living with her parents.
http://www.wnd.com/files/2012/07/INS-6.jpg
Also the August, 1961 University of Washington grade transcript lists her under the name Stanley Ann Dunham Obama.
http://www.wnd.com/2009/08/106018/