WI: Albrecht Friedrich, Duke of Prussia's Son Survives?

The last Franconian duke of Prussia had two sons, Albrecht Friedrich (b.1580, d.1580) and Wilhelm Friedrich (b.1585, d.1586). However, both died in infancy and when the loopy duke died in 1618 (having been insane since 1578), the duchy passed to the electors of Brandenburg.

So, WI: the Franconian line in Prussia DOESN'T die out in the male line. I can't find what killed his two sons, but both died at around 6 months of age. What would this mean for Brandenburg if it doesn't inherit Prussia? Or would we see a sort of Habsburg-style internarriage between the branches in Berlin and Prussia?
 
Intermarriage is likely, Brandenburg line was desperate to get right to inherit Ducal Prussia, IOTL Elector, his son and cousin all married daughters of Albert Frederick to block possibility of someone else marrying them. Also Ducal Prussian line would have better claims than Electoral one to Cleves and Berg (although having rights is not equall to be really able to get these lands. Also, son of Albert Frederick could marry Anna Vasa, Protestant sister of Sigismund III (IOTL King considered Hohenzollern husband for her), so one day Dukes of Prussia could get throne of PLC, in such case they'll be in better situation than OTL elective Kings of Poland, who have no hereditary land under their rule since Sigismund III lost Sweden, which would give them stronger position compared to OTL rulers
 
Intermarriage is likely, Brandenburg line was desperate to get right to inherit Ducal Prussia, IOTL Elector, his son and cousin all married daughters of Albert Frederick to block possibility of someone else marrying them. Also Ducal Prussian line would have better claims than Electoral one to Cleves and Berg (although having rights is not equall to be really able to get these lands. Also, son of Albert Frederick could marry Anna Vasa, Protestant sister of Sigismund III (IOTL King considered Hohenzollern husband for her), so one day Dukes of Prussia could get throne of PLC, in such case they'll be in better situation than OTL elective Kings of Poland, who have no hereditary land under their rule since Sigismund III lost Sweden, which would give them stronger position compared to OTL rulers

Makes sense. But the inheritance issue aside, how would there be a change in Brandenburger politics if they didn't have Prussia and/or Kleves? And to make things more fun, AIUI the Prussian branch was representative of the Franconian branch. Yet when the last Franconian margrave died, his successor came from the electoral branch. So, if there are still representatives from the Franconian line floating around wouldn't this affect whether the electoral line can inherit Bayreuth/Ansbach/Kulmbach/whatever?
 
Duke of Prussia was closer relative of last Hohenzollerns of Franconia, so he should get that land. BTW would Franconian 'proper' line survive, they had guaranteed rights to inherit Ducal Prussia since 1525.
 
Duke of Prussia was closer relative of last Hohenzollerns of Franconia, so he should get that land. BTW would Franconian 'proper' line survive, they had guaranteed rights to inherit Ducal Prussia since 1525.

Wasn't aware of that. But I'd guess Georg Friedrich of Ansbach would have to marry differently after his first wife dies in order for any other Franconian Hohenzollerns to survive.

That said, which son (Albrecht or Wilhelm) should survive?
 
Both, one for Prussia, one for Franconia. If only one could survive, then I'd preffer older one, so he would be 18 yo at the time of his Franconian cousin death.

Albert II (or would he be Albrecht Friedrich II?) it is then. Would he be able to claim the Franconian territories w/o Berlin kicking up a fuss about it?

That said, if the duke of Prussia were to be ever so slightly more of an energetic/dynamic ruler than the Brandenburger electors of the time, how eould things play out between the two branches. And the electoral lines princes that wound up succeeding in Franconia, would they just wind up as landless cadets here? Or would they still be found a territory somewhere? There was a Hohenzollern duke of Jägerndorf around that time, so I don't think it's entirely impossible.
 
Georg Friedrich made deal with his Brandenburg cousins, when Albrecht Friedrich was almost certainly going to die childless, ITTL perhaps Georg Friedrich could treat Albrecht Friedrich jr. like his own son and adopt him as heir?
 
Georg Friedrich made deal with his Brandenburg cousins, when Albrecht Friedrich was almost certainly going to die childless, ITTL perhaps Georg Friedrich could treat Albrecht Friedrich jr. like his own son and adopt him as heir?

Makes sense. Albrecht Friedrich, Duke of Prussia and Jülich, Margrave of Ansbach, Bayreuth and Kulmbach, Count of Mark and Ravenstein (didn't Georg Friedrich inherit his father's first wife (widow of Janos Corvinus)'s holdings in Hungary as well?). Sounds almost like a Hohenzollern wank :)
 
Since this boy is inheriting all of this, and there's a 15-year age gap between he and Anna Wasa, can she maybe marry elsewhere, and he weds, IDK, a daughter of Sigmund III maybe - there were two girls, Anna Maria and Katharina, who both died in infancy. Or for added fun, he marries Carl IX's eldest daughter (OTL countess palatine), and we get a Swedish-Prussian PU happening. :)
 
Anna Catherine Constantia Vasa, Sigismund's daughter, was considered as wife of Elector IOTL, so may marry his cousin instead ITTL.

Was this the daughter from the first or the second marriage (who all have all got the same names)? Cause I meant the daughter that Sigmund III left in Poland as a "hostage" when he went to Sweden.
 
Was this the daughter from the first or the second marriage (who all have all got the same names)? Cause I meant the daughter that Sigmund III left in Poland as a "hostage" when he went to Sweden.
From second marriage, his only daughter who lived to adulthood. If his daughter from first marriage survives she could marry Prussian Duke as well, there would be smaller age gap between them.
 
From second marriage, his only daughter who lived to adulthood. If his daughter from first marriage survives she could marry Prussian Duke as well, there would be smaller age gap between them.

A girl from the first marriage sounds more likely. Siggie's eldest girl died at just short of 7yo (IDK what the cause of death was). Or if AFII marries differently, Anna Katharina Konstanze might do for HIS son instead.
 
Perhaps @Richthofen knows more about this, but wasn't there some plan to marry the OTL margravine of Ansbach (one of Albrecht Friedrich's daughters) to the prince of Romania or something? Either way, if Albrecht Friedrich II survives and there's no possibility of another house inheriting (at least for the moment), would we maybe not see 3x marriages to Hohenzollern cousins?
 
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