WI Albrecht V. of Habsburg dies 10 years earlier?

What if Albrecht V. of Habsburg does not inherit Sigismund in 1437/8, only to die himself in 1439, leaving a posthumous male heir (Ladislaus Postumus) and Hungary in a succession struggle?
What if, instead, he dies ten years earlier, in 1429? For example, in one of the wars he`s conducting for his father-in-law against the Hussites?

Who inherits his Austrian dukedom?
And who will follow after Sigismund in Hungary?
 
He would be succeeded agnatically in Austria by his kinsman Frederick of Inner Austria.

For Bohemia-Hungary, it depends in who Sigismund thinks would be, the Luxemburgs did consider the Habsburgs as natural heirs since Charles IV, so Elizabeth marries Frederick rather than Albert.
 
He would be succeeded agnatically in Austria by his kinsman Frederick of Inner Austria.

For Bohemia-Hungary, it depends in who Sigismund thinks would be, the Luxemburgs did consider the Habsburgs as natural heirs since Charles IV, so Elizabeth marries Frederick rather than Albert.
Thanks. But in 1429, Elizabeth was already married to albert and becomes his widow now. Would she remarry frederick then??
 
Marriage between young men with older women was rare, but not unheard, especially if there is politics involved. So unless Sigismund finds someone more fitting than the Habsburgs in the Empire, little Fritz gets Lizzie.
 
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