Francis III of Brittany survives, timeline questions.

Mary and Francis' enemies in the court would be protestants so marriages with the Portuguese/Spanish might happen..

This is true.

How's this sound for their marriage:

Francis II of France (b. 1518) m Mary Tudor (b. 1516)

Issue:

Francis, Dauphin of France (b. 1537)
Louise of France (b. 1539)
Louis, Duke of Anjou (b. 1543)
Charlotte of France (b. 1545)
 
So, what we've got so far:

Catherine of Aragon dies in 1531, Henry and Anne marry in 1532. Elizabeth is born in 1532, a son Henry is born in 1534, Mary is betrothed then married to Francis III Duke of Brittany in 1536. What next?

Should James V marry Mary of Bourbon, or Mary of Guise? He's definitely having surviving legitimate male issue regardless. Henry VIII is still dying in 1547, but I am debating whether Francis I should die earlier.
 
The children of Henry VIII:

Mary, Queen of France (b. 1516)

Elizabeth (b. 1532)

Henry, Prince of Wales (b. 1534)
 
That certainly works better - as a pod

Mary Tudor's personality is also likely to be much better in a tl which sees her legitimacy maintained, her father remain Catholic and her married. Less likely to be religiously as dogmatic as she was in otl. The good things about Mary - her kindness and loyalty in particular - are likely to be stronger. She will remain a conventional Catholic and Francis I turned more to clamping down on Protestantism in France in around 1534.
Renee of France was already in Italy and didn't return to France until 1559. Margaret of Anjouleme's relationship with Anne Boleyn is conjecture rather than fact - Anne was in Claude's household for a time and certainly wrote of Margaret with affection whether it was returned is again debatable - Margaret was not a protestant though she did believe in reforming the church and did intervene with her brother the King for compassion for reformers with some small success (in that she was closer to Anne's views)
There is no reason to think Mary will not be happy at the French court - she was attractive in her youth and had a pleasant personality. Her pro-Spanish views will perhaps not be as strong as in otl given there is no estrangement with her father and the view that her only support is coming from the Spanish - though she will have a friend at court in the presence of Queen Eleanor (her maternal cousin).
However her husbands imprisonment in Spain might have affected his view of Spain and so might mistrust his wife's pro-Spanish feelings.
Catherine de Medici was looked down on by the French court because she wasn't out of the top drawer so to speak - her childlessness also didn't help matters - her relationship with Mary could be difficult - though if they both have difficulty getting pregnant that might bring them together - but every heir Mary produces will move her brother in law further down the succession.
Mary's health will certainly be better in this tl - however her husband probably had TB (from his imprisonment in Spain) so it might well be that she like her mother has difficulty carrying children to term though she might conceive quite easily (as did most of her mother's family).
 
That certainly works better - as a pod

Mary Tudor's personality is also likely to be much better in a tl which sees her legitimacy maintained, her father remain Catholic and her married. Less likely to be religiously as dogmatic as she was in otl. The good things about Mary - her kindness and loyalty in particular - are likely to be stronger. She will remain a conventional Catholic and Francis I turned more to clamping down on Protestantism in France in around 1534.
Renee of France was already in Italy and didn't return to France until 1559. Margaret of Anjouleme's relationship with Anne Boleyn is conjecture rather than fact - Anne was in Claude's household for a time and certainly wrote of Margaret with affection whether it was returned is again debatable - Margaret was not a protestant though she did believe in reforming the church and did intervene with her brother the King for compassion for reformers with some small success (in that she was closer to Anne's views)
There is no reason to think Mary will not be happy at the French court - she was attractive in her youth and had a pleasant personality. Her pro-Spanish views will perhaps not be as strong as in otl given there is no estrangement with her father and the view that her only support is coming from the Spanish - though she will have a friend at court in the presence of Queen Eleanor (her maternal cousin).
However her husbands imprisonment in Spain might have affected his view of Spain and so might mistrust his wife's pro-Spanish feelings.
Catherine de Medici was looked down on by the French court because she wasn't out of the top drawer so to speak - her childlessness also didn't help matters - her relationship with Mary could be difficult - though if they both have difficulty getting pregnant that might bring them together - but every heir Mary produces will move her brother in law further down the succession.
Mary's health will certainly be better in this tl - however her husband probably had TB (from his imprisonment in Spain) so it might well be that she like her mother has difficulty carrying children to term though she might conceive quite easily (as did most of her mother's family).

Okay interesting. So, is it likely that perhaps initially Francis is somewhat suspicious of his wife's pro Spanish leanings, and therefore they don't get off on the right foot. But as time goes by they slowly get to know one another and perhaps like each other. As for their children, is the list I came up with before alright, or should there be more stillbirths in there as well?
 
Think four surviving to adulthood is quite generous given the history on both the French and Tudor sides
 
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