As the title says, Henry VIII and Katherine of Aragon switch dates, i.e. Henry VIII dies on January 7th 1536 while Katherine lives on until January 28th 1547. For Henry VIII this is quite simple. In January 1536 of otl he had a jousting accident that left him unconscious and many feared he would die. Although that was a result of Katherine of Aragon's death, in alt I don't think it's impossible that Henry goes jousting anyways and ends up having less luck than otl and dying. For Katherine, this requires butterflying whatever illness killed her in otl.
So, with Henry dead and Katherine kicking, what happens? Obviously Katherine, Mary and their supporters will make a move for the throne and the Boleyn's will do their best to resist, especially considering Anne Boleyn's pregnant. Speaking of which, in otl it's been speculating that stress was the reason she miscarried. Since she'd be faced with a similar amount, if not more stress than otl would she still miscarry? If she does I'd imagine it'd be exploited by her enemies as a symptom of a 'Boleyn Curse'. Ultimately would Mary and Katherine triumph or would the Boleyns win? Do the Howards, the most powerful nobles at this time attempt to play Kingmaker? How does Charles V react? Would he send support to his English cousin and ex-fiancé (in hopes she marries a Habsburg proxy?)
So, with Henry dead and Katherine kicking, what happens? Obviously Katherine, Mary and their supporters will make a move for the throne and the Boleyn's will do their best to resist, especially considering Anne Boleyn's pregnant. Speaking of which, in otl it's been speculating that stress was the reason she miscarried. Since she'd be faced with a similar amount, if not more stress than otl would she still miscarry? If she does I'd imagine it'd be exploited by her enemies as a symptom of a 'Boleyn Curse'. Ultimately would Mary and Katherine triumph or would the Boleyns win? Do the Howards, the most powerful nobles at this time attempt to play Kingmaker? How does Charles V react? Would he send support to his English cousin and ex-fiancé (in hopes she marries a Habsburg proxy?)