A Hannoverian Question

This is probably gonna look like a weird question but here goes:

Sophie of the Palatinate had 6 sons of whom only one (OTL George I) married. After Sophia and her heirs the Act of Union I should imagine would become void due to the fact that England and Scotland would then have separate heirs - descent of the Earls of Arran for Scotland, and either of the Earls of Hertford or the Earls of Huntingdon for England.

So, if any of Sophia's other sons were likely to marry, who would it be, and who would they marry (obviously Protestants except for Max Wilhelm who apparently had converted to Catholicism in 1692 so he wouldn't be bound by the Act of Settlement)? Also, although the Guelphs had passed a law recently (to which OTL George I's brothers objected) that stipulated that the state of Hannover/Brunswick-Luneburg could not be partitioned amongst the sons anymore but must pass in its entirety via primogeniture, Great Britain would've had no such law. *Was it possible that one son could succeed in Britain while another succeeded in Hannover?
 
*Was it possible that one son could succeed in Britain while another succeeded in Hannover?

The idea of ​​separating Britain from Hanover was not new in the House of Hanover. It seems that George II had written this even in his testamentary dispositions...

Also, although the Guelphs had passed a law recently (to which OTL George I's brothers objected) that stipulated that the state of Hannover/Brunswick-Luneburg could not be partitioned amongst the sons anymore but must pass in its entirety via primogeniture, Great Britain would've had no such law.

With regard to the question of the introduction of primogeniture in the state of Hanover/Brunswick-Luneburg, this thing was one of the clauses necessary to gain recognition as the Principality Electoral... George I, in fact, asked his brothers to accept this new practice , meeting the unconditional availability of his brother Ernest Augustus, who then became Prince-Bishop of Osnabrück.
In fact, the George I's father, Ernest Augustus, in 1692 he was appointed prince-elector by the Emperor, but the electorship did not come into effect until 1708.

So, if any of Sophia's other sons were likely to marry, who would it be, and who would they marry

In my project (chapter 1. «NEVER BACK», paragraph.3. «The first Hanoverian king.» https://www.alternatehistory.com/discussion/showthread.php?t=308735 ) I have suggested, after a long and careful research, as proposable wives for Ernest Augustus in 1709 Princess Ulrika Eleonora of Sweden, sister of the king Charles XII; in 1710 Marie Charlotte of East Frisia (1689 - 1761)[daughter of Prince Christian Everhard of East Frisia (von Ostfriesland, from the House of Cirksena) and Eberhadine Sophie of Oettingen-Oettingen], widow of Frederick Ulrich of East Frisia (+ 13.3.1710), because already mother of a little girl and therefore fertile; in the end I opted for Wilhelmine Charlotte of Hesse-Kassel (Kassel 8.7.1695 - Herzberg Castle, in Herzberg am Harz, 27.11.1722),
[FONT=Tahoma, sans-serif] daughter of Landgrave Charles I of Hesse-Kassel and Maria Amalia of Courland, and sister of Frederick (1676 – 1751), became in 1720 King of Sweden[/FONT].
IN REALITY it was rumoured in the London press in late July 1716 that the granting of British and Irish peerages to Ernest Augustus foreshadowed a marriage between the duke of York and the princess dowager of Nassau-Friesland, mother of the infant prince of Orange, but the story failed to be substantiated and no marriage took place.
 
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