Obviously the definition of natural born citizen, circa 1790, as understood by our founders wasn't that of two citizen parents and born in country.
Why do you keep spouting off from a position of Ignorance? (or perhaps deliberately misleading people?) Prior to the Women's Citizenship act of 1934 (and the Cable act of 1922) citizenship of offspring was decided ONLY by the father. The mothers were automatically made citizens upon marriage to the father.
In 1790, American fathers ALWAYS created "natural born citizens" because Marriage automatically naturalized the woman. You further leave out the fact that the Naturalization act of 1790 specifically forbids citizenship to the children of foreign males! (Unless they thereafter become citizens.)
Do you think all children born to US citizen fathers were born within the state of matrimony? Talk about arguing from a position of absolute IGNORANCE!
Under the 1790 act there was no mention of the requirement that the father and mother be married for the child of a US citizen father (one parent) born overseas (not in country) to be a natural born citizen.
Thus clearly the child of a US citizen father to a non citizen mother who the father was not married to, was considered a natural born citizen under the 1790 Act.