Cher Louis remained a catholic.There are no laws saying a Monarch has to be this or that denomination,
but tradition has it that the Oranges are protestant.
This is not Britain.The Heir,Alexander is married to a catholic Maxima,
Prince Maurits married a catholic Princess Marilene and they are still in line until Alexander takes over.
We don't take to way out of time medieval rules and regulations regarding faith and our Monarchy.
Louis Napoleon already has his own thread here.