WI: The Margraves of Burgau (Hapsburg morganatic branch) survive

What it say on the tin, what if the morganatic branch of the House of Hapsburg (started by Ferdinand II's marriage to Philippine Welser) had continued after the first generation? Either by Charles, Margrave of Burgau, having legitimate children or by his younger brother who died young surviving and producing legitimate offspring.

Seeing as how Ferdinand of Further Austria's agreement with his father meant that his descendants could only gain their titles and the Hapsburg inheritance in the case of an extinction of the entire dynastic male line of the family, what would this branch of the Hapsburgs surviving change when the male legitimate line does start to die off in the turn of the 17th century?
 
I'd say an earlier marriage to Sibylle of Cleves (Anna de Medici was also proposed) and the Habsburgs ACTUALLY deciding to annex Cleves instead of split it amongst the heirs, could be interesting.

Another point would be that while the Burgaus would have no right to Austria so lov as their legitimate cousins are extant, Spain and the Netherlands are NOT covered by morganatic law.
 
I'd say an earlier marriage to Sibylle of Cleves (Anna de Medici was also proposed) and the Habsburgs ACTUALLY deciding to annex Cleves instead of split it amongst the heirs, could be interesting.

Another point would be that while the Burgaus would have no right to Austria so lov as their legitimate cousins are extant, Spain and the Netherlands are NOT covered by morganatic law.
Spain and Netherlands belonged to the other branch of the family and both allowed female succession
 
Spain and Netherlands belonged to the other branch of the family and both allowed female succession
I meant that in the event of a (very unlikely) situation like OTL happening. Maria Antonia of Austria, princess de los Asturias (or her mom) can be married to a "Habsburg-lite" Burgau and Europe doesn't go into a mad panic about the imperial and Spanish crowns winding up on one head, kinda thing
 
I meant that in the event of a (very unlikely) situation like OTL happening. Maria Antonia of Austria, princess de los Asturias (or her mom) can be married to a "Habsburg-lite" Burgau and Europe doesn't go into a mad panic about the imperial and Spanish crowns winding up on one head, kinda thing
Maria Antonia would surely be married to a Burgau as they also are Habsburgs, but a similar match for her mother is pretty unlikely.
 
Maria Antonia would surely be married to a Burgau as they also are Habsburgs, but a similar match for her mother is pretty unlikely.
What would be cool is Isabel Clara Eugenia having a daughter who winds up married to the Burgaus because there's no available Spanish infante/Austrian archduke. Burgau Low Countries?
 
What would be cool is Isabel Clara Eugenia having a daughter who winds up married to the Burgaus because there's no available Spanish infante/Austrian archduke. Burgau Low Countries?
True, that would be interesting. The house of Austria-Netherlands (the Burgau were entitled to use the surname of Austria/Habsburg as the wedding of their parents was more alike to a secret wedding than a true morganatic one) would inherit Isabella’s claim on Spain and would be last in Austrian succession.
 
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True, that would be interesting. The house of Austria-Netherlands would inherit Isabella’s claim on Spain and would be last in Austrian succession.
And wasn't the Tyrol inheritable by the female line? Cue the reason why a daughter of Ferdinand II and then Klaudia Felizitas married Emperor Matthias and Leopold I respectively? So the Burgaus could theoretically (with the right tweaks) marry the heiress to the Tyrol and end up with Further Austria and the Netherlands
 
And wasn't the Tyrol inheritable by the female line? Cue the reason why a daughter of Ferdinand II and then Klaudia Felizitas married Emperor Matthias and Leopold I respectively? So the Burgaus could theoretically (with the right tweaks) marry the heiress to the Tyrol and end up with Further Austria and the Netherlands
No, Tyrol was male-line only or Klaudia would have inherited before or after her uncle, instead of receiving the title of Countess of Tyrol after the wedding.
 
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