Before the Civil War, interracial unions were not rare in the American South. They typically involved White men paired with Black women. Unions of Black men with White women were rarer, but also not very well documented, and therefore possibly forgotten by history.[13]
https://en.m.wikipedia.org/wiki/Interracial_marriage_in_the_United_States
While opposed to slavery, in a speech in Charleston, Illinois in 1858, Abraham Lincoln stated, "I am not, nor ever have been in favor of making voters or jurors of negroes, nor of qualifying them to hold office, nor to intermarry with white people. I as much as any man am in favor of the superior position assigned to the white race".[14]
https://en.m.wikipedia.org/wiki/Interracial_marriage_in_the_United_States