
Royals during this timeline often had incestuous relationships and have a child, and those children tend to have mental or physical disorders. If counting the possibility of the duke's parents being siblings or at least cousins, it's very unusual that they are in perfect condition. I wouldn't be surprised if the duke's child had a cane to help him walk or something...
I wanna drop it but I also wanna know what happens next AAAAAHHHHHHHHHHH