“Not to mention under the Nuremberg Laws, if they float your boat.”
Actually, the Nuremberg laws required 3 (if you practiced Judaism) or 4 (if you converted out) Jewish grandparents.
The laws also considered parent’s conversions from Judaism valid if they occurried before 1898. (I believe I have that date right; I could be off a decade.)
Anyway, since Karl died way before and his father was a Lutheran, he would have been clear under the Nuremburg laws.
Actually, Karl had 4 Jewish grandparents. So I think he would have been in trouble under Nuremberg.
I think it is interesting that the Nuremberg Laws were not nearly as severe against Mischlings as most people assume. A far cry from the “one drop rule,” anyway.