Ok so, changes to the family trees based off what has been said:
- So, first off I want to deal with Bona Sforza and the Polish situation. Based off what has been suggested, I'm going to go with a longer living Barbara Zápolya, living to at least the 1520's and producing at least one son. That son would actually be a good age for Elisabeth of Austria, and since there's been interest in a Hapsburg/Jaigellon match in this thread, I'm going to assume that would be more acceptable. It extends Hapsburg interests in Poland and, instead of marrying Elisabeth, we could see the Elector Palatine marrying a daughter of Maximilian and Anna of Bohemia and Hungary. That then freed up Bona Sforza to marry Ferdinand of Burgundy, Duke of Milan as a way to sure up the Hapsburg hold on Milan, which actually might be the thing that annoys Franz. He offers a match between the new Duke of Milan and his second daughter, and instead his nephew marries a woman pushing 30. His daughter is jilted, maybe he feels that there's nothing to lose from dropping his nephew's family, and thus he marries his daughters away from the traditional Hapsburg alliances.
- Without the OTL French match, we really have 2 options for Eleanor of Austria: a new marriage or no marriage. Well, on one hand we could leave her single, and maybe have her act as Regent in Burgundy, like her aunt was OTL, but the problem is we have no idea if she'd be any good at it. She could have similar political skills as Margaret of Austria, but since we have no real evidence of that, it's a risky move. But what about marrying her off? I'm not suggesting the man she wanted to marry, because if the Elector Palatine wasn't a good match for the Holy Roman Emperor's sister in Charles' mind OTL, despite it's benefits for him, then it certainly won't be for the King of Spain, who really has no need to keep him happy. So let's have a look at our options. I'm guessing that Eleanor's marriage is either going to be to sure up an alliance that's pre-existing, or to make life easier for the Italian Wars. So it's either going to be in England, Portugal or Italy. But the problem is, there's really no one big enough in theory for her. Henry VIII, King of England would be good if in this timeline Catherine of Aragon dies younger, say around 1518 after her last miscarriage. But let's say that hasn't happened and there's no one there to offer her. So let's move on to Portugal. You could, in theory, marry her to one of Manuel's sons, but that's icky, and requires a dispension. Plus, it's kind of a waste. So let's look at Italy. The match that quickest comes to mind is with Ercole d'Este, who OTL married Renee of France. He's a little young for her, but he's not so young that it would be impossible, and if he's on the side of Spain rather than France, then that will definitely help in the Italian Wars. Another Italian match might be the Marquess of Montferrat, although he is 14 years her junior. But that might make him easier to control. A third option might actually be Ferdinand, Duke of Calabria, which might lead to either his reinstation as King of Naples, but most likely not. With marriage to Ferdinand, I could easily see them being made Regents of Burgundy, but I think a match with the Duke of Ferrera is the most likely, as he was OTL married to a Princess.
- Now if we go to what happens with Beatrice, it really depends on where there's a need for her. It isn't impossible to imagine her marrying into a Portuguese noble family, and if Joao III of Portugal wants to make the Braganza branch happy, he might marry Beatrice to Teodósio I, Duke of Braganza. His birthdate has been listed as 1503 and 1510, but considering that 1510 is more often listed, I'm going to assume that that date is more accurate. That means he's a few years younger than her, but marriage to a royal Princess is more than enough to deal with that. Other than him, we might actually see her offered to Franz the Younger, or even just let into a career in the Church. She might also go to Italy, but I can genuinely see her marriage going to a Portuguese nobleman, if just because it's the type of match Joao III favoured, due to it being easier.
Franz of Austria,
Holy Roman Emperor (b.1481: c.1532) m. Elizabeth of Austria (b.1485: d.1555) (a)
1a) Maximilian,
Holy Roman Emperor (b.1502) m. Anne I,
Queen of Bohemia and Hungary (b.1503) (a)
1a) Elisabeth of Austria, Archduchess of Austria (b.1522) m. Frederick III, Elector Palatine (b.1515: d.1576) (a)
2a) Mary of Austria (b.1505) m. Louis II,
King of Bohemia and Hungary (b.1506: d.1526) (a), Charles VIII,
King of France (b.1470: c.1535) (b)
3a) Franz of Austria (b.1507) m. Anne Bathory (c.1530) (a)
4a) Christina of Austria (b.1510) m. James V,
King of Scotland (b.1512) (a)
5a) Leopold of Austria, Archbishop of
*Insert Name Here* (b.1512)
6a) Elisabeth of Austria (b.1515) m. Sigismund II
, King of Poland (b.1516) (a)
Philip IV,
Duke of Burgundy (b.1478: d.1506) m. Juana I,
Queen of Portugal (b.1479: d.1555) (a)
1a) Eleanor of Burgundy (b.1498: d.1558) m. Manuel I,
King of Portugal (b.1469: d.1521) (a), Ercole II d'Este, Duke of Ferrara (b.1508: d.1559) (b)
1a) Carlos, Infante of Portugal (b.1520: d.1521)
2a) Maria, Infanta of Portugal (b.1521)
2a) Carlos I,
King of Spain (b.1550: d.1558) m. Isabella,
Infanta of Portugal (b.1503) (a)
3a) Isabella of Burgundy (b.1501: d.1526) m. Christian II,
King of Denmark(b.1481: d.1559) (a)
4a) Ferdinand,
Duke of Milan (b.1503: d.1564) m. Bona Sforza (b.1494) (a)
5a) Mary of Burgundy (b.1505: d.1558) m. Charles III,
Duke of Savoy (b.1486: d.1553) (a)
6a) Catherine of Burgundy (b.1507: d.1578) m. Joao III,
King of Portugal (b.1502: d.1557) (a)
Margaret of Austria (b.1480: d.1530) m. Juan,
Prince of Asturias and Girona (b.1478: d.1497) (a), Philibert II,
Duke of Savoy (b.1480: d.1504) (b), LouisI,
Duke of Orleans(b.1462: d.1515) (c)
1a) Stillborn Daughter (c.1498)
2c) Stillborn Son (c.1507)
3c) Marie d'Orleans (b.1509) m. Louis, Duke of Montpensier (b.1513: d.1582) (a)
4c) Charles II, Duke of Orleans (b.1511: d.1519)
5c) Miscarriage (c.1512)
6c) John I, Duke of Orleans (b.1514) m. Marie of Guise (b.1515: d.1560) (a)
Sigismund I,
King of Poland (b.1467: d.1548) m. Barbara Zápolya (b.1495: d.1529) (a)
1a) Hedwig, Princess of Poland (b.1513)
2a) Anna, Princess of Poland (b.1515: d.1520)
3a) Sigismund II, King of Poland (b.1516) m. Elisabeth of Austria (b.1515)
4a) Sophia, Princess of Poland (b.1518)
5a) Stillborn Daughter (c.1520)
6a) Catherine, Princess of Poland (b.1521)
7a) Casimir, Prince of Poland (b.1524)
8a) Elisabeth, Princess of Poland (b.1526: d.1532)
Manuel I,
King of Portugal (b.1464: d.1521) m. Isabella of Aragon (b.1470: d.1498) (a), Maria of Aragon (b.1482: d.1517) (b), Eleanor of Burgundy (b.1498: d.1547) (c)
1a) Miguel de Paz, Infante of Portugal (b.1498: d.1500)
2b) Joao III, King of Portugal (B.1502: d.1557) m. Catherine of Burgundy (b.1507) (a)
3b) Isabella, Intanta of Portugal (b.1503) m. Carlos I, King of Spain (b.1550: d.1558)
4b) Beatriz, Infanta of Portugal (b.1504) m. Teodósio I, Duke of Braganza (b.1510: d.1563) (a)
5b) Luis, Duke of Beja (b.1506)
6b) Fernando, Duke of Guarda (b.1507: d.1534)
7b) Afonso, Archbishop of Lisbon (b.1509: d.1540)
8b) Henrique, Archbishop of Braga (b.1512)
9b) Maria, Infanta of Portugal (b.1513: d.1513)
10b) Duarte, Duke of Guimaraes (b.1515: d.1540)
11b) Antonio, Infante of Portugal (b.1516: d.1516)
12c) Carlos, Infante of Portugal (b.1520: d.1521)
13c) Maria, Infanta of Portugal (b.1521)