Ignoring the other blatant problems with this interpretation (e.g. that social class was highly correlated with fitness) I suspect that the nobility were interm

Ignoring the other blatant problems with this interpretation (e.g. that social class was highly correlated with fitness) I suspect that the nobility were intermixing their genes quit successfully via coercion & violence. I am not a geneticist or a historian or even more than barely literate