The Gunpowder Treason and Plot AHC; Reunite England with the Church

Remembering, remembering...

In honour of the day, I thought it appropriate to post a Challenge. Not re - the success of the gunpowder plot because that's been discussed and it doesn't seem to end well for the Catholics in any bat free scenario. So the challenge is thus:

With a POD following the death of Queen Mary I, reunite England and Holy Mother Church. Bonus points for getting the Scots along for the ride.
 
Can the POD be that on 17 November 1558, Mary I dies ... giving birth to a boy, Philip I of England?
Wouldn't that imply a PoD in February 1558? Given that her husband was back in his own kingdom at the time, that could present one or two difficulties...
 
Can the POD be that on 17 November 1558, Mary I dies ... giving birth to a boy, Philip I of England?

Minor quibble; Felipe II was Philip I of England; if he was named after his father, he would be Philip II of England, and, if Don Carlos, Prince of Asturias dies on schedule, Felipe III of Castile.
 
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