....my memory may be playing tricks on me but I recall some years ago an article that he got his maid/housekeeper pregnant and then put her out on the street...he was born into a Jewish family but his father insisted they all convert to Luteranism (??) at some point, again, if I recall correctly...he was a total scumbag, if that term had been around in those days...
Looteranism, as practice by Charley Marx.
Know who else had a Jewish background?
Joseph Stalin.
Leon Trotsky also if I remember right.
Of course, there is the speculation that Hitler had Jewish background. Never proven as far as I know.
Which brings up..WTF?
My understanding is he kept the woman as his mistress in his home, right under his wife’s nose. The boy wasn’t allowed in the house, and Marx convinced Engels to claim paternity of the boy.