[El Gato]

I wonder, as a matter of law, if it's the biological father or the legal father that counts. In 1961 there was really no way to know for certain who the biological father was. But it was presumed, and still is unless there is evidence to the contrary, that the husband of a woman at the time a child is born of that woman is the father.

So, if BHO Sr, and Stanley Ann were married, then BHO Sr was legally his father, regardless of who the sperm donor happened to be.

[Spunky]

"I wonder, as a matter of law, if it's the biological father or the legal father that counts."

It is the legal father that counts. Even in this day and age if you are married and suspect that your wife may have given birth to a child that is not yours, you have to have a DNA test before the child reaches two years old to prove it isn't. After that you are the legal father and have to take care of the child regardless if you find out later it was not yours. At least that is the law in Washington State.