It would not be possible for Edward by the salic law., Besides, to Elizabeth's situation England will have to have an army superior to Spain's(Not to mention that the Spaniards have much more battle experience) Spain will inevitably try to stop a Protestant from the French throne, In addition to being able to further inflame French Catholics, With this it can be seen as a second hundred years war(In case Edward IV marries a French princess), Well in my opinion any Protestant pretending to be King of France in the period has two options or have an army that crushes the Catholic League and the Spaniards or Converting to Catholicism
While Spain would TRY I'm not sure they (or anyone else) could do overly much. Particularly if it were to be "gradual". François I went anti-Protestant after the Affaire des Placards. But, his sister was a known patroness of several Protestant theologians (as was Renée de France). That said...should François I's eldest son survive(which I suspect would require him to
avoid being imprisoned in Spain), a match to Kristina of Denmark was proposed. Both Kristina and her sister, Dorothea, had reputations as not being the most
hardline Catholics (surprisingly Dorothea was in much favour with the Spanish court in spite of this).
So, if we avoid the massive public fail that was the Affaire des Placards, TTL François II marrying Kristina of Denmark, we could see a very differnet France as early as 1550. That's
not to say that the kingdom will be happy or no Wars of Religion, but it's a thought.
I was honestly just imagining Edward raising an army and slaughtering the male claimants...
Pretty
long list of those, since he'd have to get rid of the Valois, the Bourbons, the Bourbon-Montpensiers and he'd finally get down to the Courtenays. Problem comes in with what happens if those male claimants
are Protestant (like some of the Bourbons)?
That being said, Protestant France could work with an Edward VI-raised daughter marrying a Valois king.
After Saint-Barts, I suspect it's too late.
Or Elizabeth marrying a Valois king.
Think this idea would cause more friction in England than in France, since the child (unless she's married to a surviving duc d'Angoulême) will be raised Catholic. After all, one of the sticking points with Alençon (IIRC) was that he was to have a private chapel where mass would be said
Alternately, an earlier industrial revolution.
Huh?
Or, if the Guises present themselves as Protestant instead of Catholic.
Considering that Mary, Queen of Scots' grandmother was a Bourbon, and the dowager duchess managed to walk a line between Protestants and Catholics (à la Marguerite d'Angoulême) - it was actually a reason, IIRC, why Renée de France agreed to her daughter marrying a Guise - it's not necessarily as odd as one might think.
Or if Katherine Parr married a French king instead though that last one is ASB.
Because there were no Protestants at the French court? They needed to
import one? Normandy (IIRC) was called "Little Germany" at the time for the sheer number of Protestants.