@pocky8
Small correction- its not an "affair"
if a man, sells his wife for money or goods, which the Marquess clearly did ,it is human trafficking. Which is something that did happening historical[and presently but I digress] , but human trafficking is still human trafficking even if its under a different name. Selling woman or human beings for goods with out their consent it is rape/sex exploitation.
[not so fun historical facts]
Its not that surprising that she dots/or obsessed with their son as woman typical didn't get any power in house holds until they had a "viable male heir". For now the story is pretty historical accurate, this is just the hypocrisy of dynastic cultures. Men have many lovers, woman that do the same [and get caught or even blamed for doing so] get killed.
Ie. Famous ex. Anne Boylne, wife of Henery the 8th , though their are many...many others.
Many men did what the Marquess did historical as well. Their are many priest/clergymen that were by law not allowed to get married or have sex but they did it anyway. So they would get their lover to get married to a puppet husband so they would have the "legal status" of being married while still having sex with their lover, the "legal "husband being a puppet that was getting paid of/blackmailed etc'. Famous example is Pope Alexander VI of the Borgia family. He had several children and acted as the patriarch of his family [even though "legally he couldn't really be a father". Had other men be the legal husband of his children..one particular famous child of his was "Caesar Borgia"...this is what is happening in this story. Its just hypocritical puritan politics.