Just trying to keep the focus where it should be.....
Gotcha. ANN S DUNHAM STUDENT, listed in the Honolulu Polk for 1961, and ANNA OBAMA STUDENT, listed in the Seattle Polk for 1961.
Neat trick. Almost as good as sawing a woman in half.
One has a baby-sitter in January 1961 and is enrolled at the U of WA. The other shows up with a newborn in August and shows it to Susan Blake, and no one sees her again until the listing for Anna Obama is found.