Catholic Brandenburg

Say Joachim II, Elector od Brandenburg (1505-1571) happened to be staunch Catholic like his father-in-law, George the Bearded of Saxony. Considering the fact, that both his wives were also daughters od devout Catholic monarchs, Joachim's Catholicism is likely to pass to next generation of Hohenzollerns. Also, Catholic Joachim is likely to more actively support Charles V in Schmalkaldic Wars, not even mentioning the fact, that his two wives were of Jagiellonian descend (Magdalene was granddaughter of Casimir IV, Hedwig was daughter of Sigismund I), so beside skewing religious landscape of Germany in favour of Catholics (now Catholics have 5 electorates, Protestants just 2) Joachim's Catholicism makes dynastic or personal union between Brandenburg and Poland-Lithuania very likely, how would situation in the region develop in such case? Brandenburg as northern Austria's analogue attached to bigger realm outside HRE?
 
Say Joachim II, Elector od Brandenburg (1505-1571) happened to be staunch Catholic like his father-in-law, George the Bearded of Saxony. Considering the fact, that both his wives were also daughters od devout Catholic monarchs, Joachim's Catholicism is likely to pass to next generation of Hohenzollerns. Also, Catholic Joachim is likely to more actively support Charles V in Schmalkaldic Wars, not even mentioning the fact, that his two wives were of Jagiellonian descend (Magdalene was granddaughter of Casimir IV, Hedwig was daughter of Sigismund I), so beside skewing religious landscape of Germany in favour of Catholics (now Catholics have 5 electorates, Protestants just 2) Joachim's Catholicism makes dynastic or personal union between Brandenburg and Poland-Lithuania very likely, how would situation in the region develop in such case? Brandenburg as northern Austria's analogue attached to bigger realm outside HRE?

Would be fun to see if Joachim stays Catholic and his Franconian cousins (of which were the dukes of Prussia) go Lutheran/Calvinist. OTL Joachim's line ended up inheriting the Franconian territories and Prussia, but that TTL the Franconian line survives. Could be like the Wittelsbachs with a Protestant Palatine and a Catholic Bavarian branch...
 
Would be fun to see if Joachim stays Catholic and his Franconian cousins (of which were the dukes of Prussia) go Lutheran/Calvinist. OTL Joachim's line ended up inheriting the Franconian territories and Prussia, but that TTL the Franconian line survives. Could be like the Wittelsbachs with a Protestant Palatine and a Catholic Bavarian branch...
In addition there is also Protestant line of Ducal Prussia, which ended in male line with death of mentally ill Albrecht Friedrich.
 
In addition there is also Protestant line of Ducal Prussia, which ended in male line with death of mentally ill Albrecht Friedrich.

Albrecht, Duke of Prussia, was from the Franconian branch. And Albrecht Friedrich had three or four sons who were either stillborn or died in infancy. So they could survive here. But before we jump ahead, do we have a date pinned for when Joachim II officially converted (so we know when our POD is - say he converted OTL 1520, then everything after 1520 does change but anything between 1517 and 1520 might change)? And if he doesn't convert what's his policy towards the Protestants in his domain? Tolerance? Persecution? Ambivalence - one day he persecutes them, the next he doesn't?
 
During 1530s he was still able to play role of "good Catholic" to convince Sigismund I to let Hedwig marry him.

Okay. Staying Catholic is going to change where his children marry, for one. His system of alliances is also going to be affected. Since Brandenburg TTL would be a sort of Catholic island as her neighbours turn to Luther or Calvin.

Of course, another question is how do you keep Joachim's son Catholic?
 
Okay. Staying Catholic is going to change where his children marry, for one.
I think marriages between Catholic Joachim's kids and children of Emperor Ferdinand are likely in such situation (what would you say about Joachim's daughter marriage to Archduke Ferdinand of Tirol?). Another Catholic dynasty to intermarry would certainly improve Habsburg gene pool. I'll make some family tree for Joachim soon.
 
What about marrying Joachim's son to say Sophia or Anna Jagiellonika (instead of Joachim remarrying to Hedwig). There was a plan to marry Anna to the margrave of Ansbach (Albrecht Alkibiades) IIRC). Or Hell, Joachim himself could marry Hedwig as a first wife (she'd be 11 in 1524, youngish for a marriage, but most marriages were agreed around 13yo for a girl IIRC so not too young).
 
I think marriages between Catholic Joachim's kids and children of Emperor Ferdinand are likely in such situation (what would you say about Joachim's daughter marriage to Archduke Ferdinand of Tirol?). Another Catholic dynasty to intermarry would certainly improve Habsburg gene pool. I'll make some family tree for Joachim soon.

Could be interesting. Johann Georg marries Maria (OTL duchess of Kleves), since Elisabeth was epileptic and Anna was already slated for Bavaria by a treaty between the Habsburgs and Wittelsbachs.

Maria removes the entirety of the Cleves line (so Prussia's succession is also butterflied since her eldest daughter married the duke of Prussia), or her sister, Margarethe (OTL considered for Felipe II of Spain) if you want minimal butterflies.

As to a Hohenzollern wife for Karl, anything might be better than his rabid Catholic Bavarian niece who insisted on a Jesuit education for her son (Ferdinand II) IIRC
 
My plan is:
-Magdalena of Saxony lives longer, so instead of Joachim, Jadwiga/Hedwig Jagiellon marry his brother, Johann.
-Johann and Hedwig have one surviving daughter, also Hedwig (b. around 1540), married in 1565 to Archduke Charles of Styria.
-Joachim and Magdalena have one surviving son, Johann Georg (b.1525), and daughter Elisabeth (b. 1528)
-Johann Georg marries Zofia Jagiellon around 1545, they have two surviving sons-Sigismund (b. 1549) and Joachim (1552-1577), Sigismund is elected King of Poland in 1573, succeeded father as Elector of Brandenburg in 1598, starting personal union of PLC and Brandenburg,
-Elisabeth marry Archduke Ferdinand of Tirol around 1550, after her death in late 1560s Ferdinand remarries to Maria Anna of Bavaria.
 
My plan is:
-Magdalena of Saxony lives longer, so instead of Joachim, Jadwiga/Hedwig Jagiellon marry his brother, Johann.
-Johann and Hedwig have one surviving daughter, also Hedwig (b. around 1540), married in 1565 to Archduke Charles of Styria.
-Joachim and Magdalena have one surviving son, Johann Georg (b.1525), and daughter Elisabeth (b. 1528)
-Johann Georg marries Zofia Jagiellon around 1545, they have two surviving sons-Sigismund (b. 1549) and Joachim (1552-1577), Sigismund is elected King of Poland in 1573, succeeded father as Elector of Brandenburg in 1598, starting personal union of PLC and Brandenburg,
-Elisabeth marry Archduke Ferdinand of Tirol around 1550, after her death in late 1560s Ferdinand remarries to Maria Anna of Bavaria.

By Ferdinand of Tyrol are you referring to the brother of Maximilian II? Because he was married to Fraulein Welser at some point in the 1550s. Unless you mean that Elisabeth is going to marry him as a second wife (replacing his Gonzaga niece)?
 
By Ferdinand of Tyrol are you referring to the brother of Maximilian II? Because he was married to Fraulein Welser at some point in the 1550s. Unless you mean that Elisabeth is going to marry him as a second wife (replacing his Gonzaga niece)?
I mean they marry before Ferdinand's secret marriage to Philippine Welser, butterflying Welser marriage away.
 
My plan is:
-Magdalena of Saxony lives longer, so instead of Joachim, Jadwiga/Hedwig Jagiellon marry his brother, Johann.
-Johann and Hedwig have one surviving daughter, also Hedwig (b. around 1540), married in 1565 to Archduke Charles of Styria.
-Joachim and Magdalena have one surviving son, Johann Georg (b.1525), and daughter Elisabeth (b. 1528)
-Johann Georg marries Zofia Jagiellon around 1545, they have two surviving sons-Sigismund (b. 1549) and Joachim (1552-1577), Sigismund is elected King of Poland in 1573, succeeded father as Elector of Brandenburg in 1598, starting personal union of PLC and Brandenburg,
-Elisabeth marry Archduke Ferdinand of Tirol around 1550, after her death in late 1560s Ferdinand remarries to Maria Anna of Bavaria.

Sounds like an interesting scenario, but is it set in stone that Siggie II will have no kids? AIUI it was because he got a STD from one of Bona's ladies-in-waiting, which isn't exactly iron-clad/butterfly-proof.
 
Sounds like an interesting scenario, but is it set in stone that Siggie II will have no kids? AIUI it was because he got a STD from one of Bona's ladies-in-waiting, which isn't exactly iron-clad/butterfly-proof.
Sigismund Augustus had tons of mistresses (one of them, Barbara Giżanka, gave birth to a daughter, whom Siggie belived to be his, but no one else on his court did) so venereal disease making him sterile is not guaranteed, but still likely.
 
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