The sons of John III of Portugal

Inspired by this thread, but also somewhat different in view, John III of Portugal had a fair few children, mainly sons who all died young and apart from Prince Joao Manuel, without issue.

My query is this, say one or more of John III's other children had survived into adulthood what might this have changed?

Such children including:

Prince Manuel (b 1531: d. 1537) Prince Filipe (b 1533: d 1539) and Infante Antonio (b. 1539: d.1540)

Obviously if either Manuel or Filipe survived they and no Joao Manuel would be their father's heir and likely would marry Joan of Spain in his place. However, if they both died as otl, and Infante Antonio survived, who might he marry and what consequences could this have for things?

Alternatively, what happens if all three of them survive?
 
I suppose, I'd be happy knowing thoughts on either scenario.

What I am aiming for is for one of John III sons to actually live and be around and have issue so that we can avoid the whole shebang with the succession crisis.
 
So, a bit more solid on what it is I'm actually curious about now. Seeing Infante Antonio survive and have issue would be brilliant. He'd be 38/39 when his nephew dies, if indeed his nephew dies as he did otl, who might he marry?
 
Perhaps Lucrezia D'Este?

Perhaps the widowed Queen Juana when his brother dies? It's not unthinkable, and if the Prior of Crato made a suit for her hand, a legitimate prince could do the same.

Alternatively, Joao Manuel was betrothed in the late 1530s, early 1540s to none other than our favourite redheaded queen. (Then again, Felipe II was her betrothed before and after) . Now the chances of such a match going through are slim - particularly if he's a younger son, and Henry VIII's tendency to play games with his kids betrothals - but I'd vote on Lucrezia (although her family is traditionally pro-French) just to liven up the Aviz gene pool.
 
Perhaps the widowed Queen Juana when his brother dies? It's not unthinkable, and if the Prior of Crato made a suit for her hand, a legitimate prince could do the same.

Alternatively, Joao Manuel was betrothed in the late 1530s, early 1540s to none other than our favourite redheaded queen. (Then again, Felipe II was her betrothed before and after) . Now the chances of such a match going through are slim - particularly if he's a younger son, and Henry VIII's tendency to play games with his kids betrothals - but I'd vote on Lucrezia (although her family is traditionally pro-French) just to liven up the Aviz gene pool.

Interesting, in regards to Juana, would the papacy grant the dispensation? After all, she's married his brother and had a son by him, though I suppose Philip or Charles might put pressure on whoever the pope is to grant the dispensation.

Though Lucrezia seems like a plus, fresh blood and she seems an intriguing person.
 
There's no record of anything being majorly wrong with the three Infantes of Portugal prior to their deaths. They seemed to have succumb to the illnesses of childhood from the time, and I've heard it suggested that it might have been smallpox or something of the like.
 
There's no record of anything being majorly wrong with the three Infantes of Portugal prior to their deaths. They seemed to have succumb to the illnesses of childhood from the time, and I've heard it suggested that it might have been smallpox or something of the like.

So, it would perhaps be possible to have them survive, either all or one or two of them?
 
The early death of John III's children can much be blamed on their genetic weakening from the inbreeding among the Avis-Trastamara-Hapsburgs line. If John had married anyone not spanish or english or austrian instead then perhaps his children would have been in better health.
 
The early death of John III's children can much be blamed on their genetic weakening from the inbreeding among the Avis-Trastamara-Hapsburgs line. If John had married anyone not spanish or english or austrian instead then perhaps his children would have been in better health.

As in, if he'd married someone English perhaps things would've been better?
 
No a Tudor would not most likely been good either in the long run. I would have wanted Louis XII and Anne of Brittany to have more healthy children and one of their potential daughters to be queen of Portugal.

Name Birth Death Notes
Claude of France 14 October 1499 20 July 1524 married Francis I of France on 18 May 1514; had issue
Unnamed son 1500 1500 stillborn
Unnamed son 21 January 1503 21 January 1503 stillborn
miscarriage by the end of 1503 by the end of 1503
miscarriage 1505 1505
Unnamed son 21 January 1508 21 January 1508 stillborn
miscarriage 1509 1509
Renée of France 25 October 1510 12 June 1574 married Ercole II d'Este in April 1528;[48] had issue
Unnamed son 21 January 1512 21 January 1512 stillborn

Let's flip this for a bit

-Charles IX of France 14 October 1499 m ????
-Unamed son 1500 stillborn
-Louis of France, duke of *insert french ducal title here* b 1503 m ??
-Anne of France b 1505 m John III of Portugal b 1502
-Misscarriage 1508
-Reneé of France 1510 married ????
-Stillborn son 1512
 
No a Tudor would not most likely been good either in the long run. I would have wanted Louis XII and Anne of Brittany to have more healthy children and one of their potential daughters to be queen of Portugal.

Name Birth Death Notes
Claude of France 14 October 1499 20 July 1524 married Francis I of France on 18 May 1514; had issue
Unnamed son 1500 1500 stillborn
Unnamed son 21 January 1503 21 January 1503 stillborn
miscarriage by the end of 1503 by the end of 1503
miscarriage 1505 1505
Unnamed son 21 January 1508 21 January 1508 stillborn
miscarriage 1509 1509
Renée of France 25 October 1510 12 June 1574 married Ercole II d'Este in April 1528;[48] had issue
Unnamed son 21 January 1512 21 January 1512 stillborn

Let's flip this for a bit

-Charles IX of France 14 October 1499 m ????
-Unamed son 1500 stillborn
-Louis of France, duke of *insert french ducal title here* b 1503 m ??
-Anne of France b 1505 m John III of Portugal b 1502
-Misscarriage 1508
-Reneé of France 1510 married ????
-Stillborn son 1512

Charles IX can marry Isabel of Portugal as a part of a double Aviz match (I saw a TL once where François Ier takes Isabel as a second wife, ICR who Karl V married), or Mary Tudor.

While Renée can marry Ludwik II of Hungary (sorry I saw that in a TL and now I really like the idea of it),and have a son. Alternately, Fernando II of Aragon's son can live, and she can marry him.
 
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