Description etc.:
The father legitimizing a child born of adultery and enabling that child to inherit from a monarch who had a spouse at the time the child was conceived is just simply not something that would have worked in the middle ages.
The only person who realistically could legitimize bastards in that kind of fashion was the pope, who wouldn't have done something like that, and France would still have had a way of legislating on its succession anyway.
Similarly, a bastard of king of France becoming an independent count shouldn't have the option to legitimize himself and become heir of France. This is an absolute must to implement.
