I shouldn’t be too surprised. My mother was a Stump, Americanized from the German, Schtumpf. About 2 years ago I made friends with a black guy and was surprised when he said his last name is Stump. Things got mixed up pretty badly back in the 1800s. Now we jokingly call each other “cousin”.
There was much more mix-up in genes than anyone cares to admit and many descendants of former slaves have more than a small mix of white blood. And, yeah, it was often the black women who did the enticing. Raping a slave, contrary to the stories of the SJW class, was very much frowned upon by southern society. Being "enticed", not so much.
It wasn't limited to Black folks either. My 2x great grandfather left a wagon train to join a local Sioux tribe. It wasn't as uncommon as you'd think. Pioneer life, especially on the trail, was hard and the free lifestyle of our Natives was very enticing to more young men than just my 2X great grandfather-- especially when they threw a horse and/or a pretty young maiden into the deal. For the tribe, it was a valuable insurance policy-- a young white man or woman in the group would often would be the difference between the tribe falling victim to a military rampage or being passed by as friendly.
Anyway, guess whose last name most of the tribe adopted once they ended up trading in their free and roving lifestyle for the sure thing of government rations and a home on the reservation?