Henry VIII has a twin brother

True enough, wouldn't she also be Maximilian's Sforza's kids cousin then as well?
No. Maximilian Sforza (or better Ercole Massimiliano) is the eldest son of Ludovico Sforza “il Moro”, Duke of Milan and Beatrice d’Este (and elder brother of Francesco/Francis II Sforza, OTL first husband of Christina), his wife Bona Sforza is the daughter of Gian Galeazzo Sforza (nephew and predecessor of Ludovico and brother of Empress Bianca Maria) and Isabella of Aragon (daughter of Alfonso II of Naples, niece of Ludovico and first cousin of both Beatrice and her husband). Maximilian Sforza here married his cousin Bona Sforza for joining the claim of both branches of the Sforzas on Milan and their ATL son would be of the right age for marrying Christina who will still became Duchess of Milan but married to a different, younger Duke
 
No. Maximilian Sforza (or better Ercole Massimiliano) is the eldest son of Ludovico Sforza “il Moro”, Duke of Milan and Beatrice d’Este, his wife Bona Sforza is the daughter of Gian Galeazzo Sforza (nephew and predecessor of Ludovico and brother of Empress Bianca Maria) and Isabella of Aragon (daughter of Alfonso II of Naples, niece of Ludovico and first cousin of both Beatrice and her husband). Maximilian Sforza here married his cousin Bona Sforza for joining the claim of both branches of the Sforzas on Milan and their ATL son would be of the right age for marrying Christina (who in OTL became Duchess of Milan marrying the younger brother of her ATL father-in-law)

Ah sorry I think I completely misunderstood you. I had thought you had Emperor Maximilian having a son by Bianca Sforza
 
Ah sorry I think I completely misunderstood you. I had thought you had Emperor Maximilian having a son by Bianca Sforza
Easy mistake as Ercole Massimiliano was named after both his maternal grandfather (the Duke of Ferrara) and the Emperor Maximilian, while Francesco was named after his paternal grandfather and Maximilian’s rule on Milan was really short (and after that he was held captive in France, like Bona’s brother Francesco and both died unmarried)
 
Easy mistake as Ercole Massimiliano was named after both his maternal grandfather (the Duke of Ferrara) and the Emperor Maximilian, while Francesco was named after his paternal grandfather and Maximilian’s rule on Milan was really short (and after that he was held captive in France, like Bona’s brother Francesco and both died unmarried)

Ah I see, so what consequences could a surviving Sforza dynasty have on Milan then?
 
Ah I see, so what consequences could a surviving Sforza dynasty have on Milan then?
Keep Milan indipendent and allied to the Imperial branch of the Habsburg but free from foreign control. With the Spanish branch ruling only over South Italy and Isles and Netherlands in the hands of the Austrian Habsburg you will see a different evolution of the Iberian States and Germany.

Austrian Habsburg will have their Austrian lands, Burgundy/Netherlands and Bohemia after Luis II’s death as by the treaty between Vladislaus and Maximilian (Hungary will go to John Zapolya, brother-in-law of Sisigmund of Poland and Louis II of Hungary) keeping the focus of the Imperial branch strictly on Germany (here Karl V married a English/French princess who is either Mary Tudor the elder, a surviving Katherine Tudor or Renee of France and one of the seats of the Emperor or the main seats of his heir will be in Burgundy)
John III of Spain (aka ATL Philip II, son of Ferdinand VI and Isabella of Portugal) marry Maria Manuela of Portugal and has at least a son (called likely Ferdinand or Alfonso) by her while João Manuel of Portugal die childless so Portugal will be included in Spain. Spain will have a very strong Empire but with foreign possessions strongly under the control of the respective Kingdom (Naples, Sicily and Sardinia under the crown and council of Aragon, West Indies under the crown and council of Castile and East Indies and Africa under the crown and council of Portugal as likely Brazil will be united to the lands of Castile in a couple of generations max)...

Poland will stay strong as Barbara Zapolya will survive and have more children and her eldest son Sisgimund II will marry his cousin Anne Zapolya of Hungary (daughter and only surviving child of Nohn Zapolya and Anne Jagellon) bringing Hungary in union to Poland and Lithuania.

Northern Italy will stay indipendent with strong influences from France, HRE and the Papal States with the Duchies of Milan, Ferrara, Firenze, Savoy, Mantua and Urbino and the republics of Venice and Genoa maintaining a big level of importance.

EDIT: Burgundy/Netherlands will stay quiet and united under Habsburgs rulers who are not seen and enemies and when the Habsburg will complete the unification of Germany (or centralization of the HRE) they will be an integral part of it together with Bohemia and obviously Austria
 
Keep Milan indipendent and allied to the Imperial branch of the Habsburg but free from foreign control. With the Spanish branch ruling only over South Italy and Isles and Netherlands in the hands of the Austrian Habsburg you will see a different evolution of the Iberian States and Germany.

Austrian Habsburg will have their Austrian lands, Burgundy/Netherlands and Bohemia after Luis II’s death as by the treaty between Vladislaus and Maximilian (Hungary will go to John Zapolya, brother-in-law of Sisigmund of Poland and Louis II of Hungary) keeping the focus of the Imperial branch strictly on Germany (here Karl V married a English/French princess who is either Mary Tudor the elder, a surviving Katherine Tudor or Renee of France and one of the seats of the Emperor or the main seats of his heir will be in Burgundy)
John III of Spain (aka ATL Philip II, son of Ferdinand VI and Isabella of Portugal) marry Maria Manuela of Portugal and has at least a son (called likely Ferdinand or Alfonso) by her while João Manuel of Portugal die childless so Portugal will be included in Spain. Spain will have a very strong Empire but with foreign possessions strongly under the control of the respective Kingdom (Naples, Sicily and Sardinia under the crown and council of Aragon, West Indies under the crown and council of Castile and East Indies and Africa under the crown and council of Portugal as likely Brazil will be united to the lands of Castile in a couple of generations max)...

Poland will stay strong as Barbara Zapolya will survive and have more children and her eldest son Sisgimund II will marry his cousin Anne Zapolya of Hungary (daughter and only surviving child of Nohn Zapolya and Anne Jagellon) bringing Hungary in union to Poland and Lithuania.

Northern Italy will stay indipendent with strong influences from France, HRE and the Papal States with the Duchies of Milan, Ferrara, Firenze, Savoy, Mantua and Urbino and the republics of Venice and Genoa maintaining a big level of importance.

Alright I agree with the first point and the second point, I imagine keeping Hungary out of Habsburg hands is better for both parties.

Wouldn't Ferdinand potentially name his firstborn son after himself and his grandfather or even his other grandfather the EMperor?

Not sure I agree with having Joao being childless, keeping Portugal separate would be fascinating I think.
 
Alright I agree with the first point and the second point, I imagine keeping Hungary out of Habsburg hands is better for both parties.

Wouldn't Ferdinand potentially name his firstborn son after himself and his grandfather or even his other grandfather the EMperor?

Not sure I agree with having Joao being childless, keeping Portugal separate would be fascinating I think.
Trust me, Portugal’s ideas of royal weddings make them a candidate for quick extinction, while their extinction and a not-so-good relationship with the Imperial branch will likely keep reasonably clean the genetic of the Spanish Habsburg (and the same for the Austrian one)...

I think Ferdinand would likely name his firstborn with the name of the father of his beloved grandfather who was also the name of both his late uncles. So Juan for the heir and Ferdinand, Manuel and Alfonso for younger sons...
His Imperial grandfather (and also his late father) are nobody for Ferdinand here as he is born, was raised and had always lived in Spain so I see him sticking to the traditional Spanish (Iberian) names instead of introducing adaptations of foreign names like Carlos, Felipe or Maximiliano...
 
Trust me, Portugal’s ideas of royal weddings make them a candidate for quick extinction, while their extinction and a not-so-good relationship with the Imperial branch will likely keep reasonably clean the genetic of the Spanish Habsburg (and the same for the Austrian one)...

I think Ferdinand would likely name his firstborn with the name of the father of his beloved grandfather who was also the name of both his late uncles. So Juan for the heir and Ferdinand, Manuel and Alfonso for younger sons...
His Imperial grandfather (and also his late father) are nobody for Ferdinand here as he is born, was raised and had always lived in Spain so I see him sticking to the traditional Spanish (Iberian) names instead of introducing adaptations of foreign names like Carlos, Felipe or Maximiliano...

Hmm interesting.

Though there were candidates ahead of the Spanish in the Portuguese succession where there not?
 
Hmm interesting.

Though there were candidates ahead of the Spanish in the Portuguese succession where there not?
In OTL where don Carlos was dead without heirs yes, the heirs of Manuel’s younger sons came before Philip II who was heir of Manuel’s eldest daughter. In my scenario we have the ATL Don Carlos (called Ferdinand/Alfonso/John) surviving and he is the grandson of John from his daughter who is also the only child of John to left heirs so the next in line after the death of his maternal uncle
 
In OTL where don Carlos was dead without heirs yes, the heirs of Manuel’s younger sons came before Philip II who was heir of Manuel’s eldest daughter. In my scenario we have the ATL Don Carlos (called Ferdinand/Alfonso/John) surviving and he is the grandson of John from his daughter who is also the only child of John to left heirs so the next in line after the death of his maternal uncle

Ahhh I see, interesting
 
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