I did further research into Anglo Saxon history and found that most historians and geneologists reject the theory that Harold Godwinson was a descendant of Ethelred I of Wessex. Because of that, the descendants of Alfred the Great were the rightful Kings of Wessex and later England.
I did further research, and found that Edward the Confessor’s heir was Edgar Ætheling, but he was still young after Edward died in 1066 so the Witangeomot crowned Harold Godwinson. Edgar therefore had a more legitimate claim to the throne than either Harold or William the Conqueror. His sister St Margaret married Malcom III of Scotland. The legitimate heirs of Scotland are the descendants of King John Baliol. So the true heir to all of England and Scotland is the son of this guy.
https://en.wikipedia.org/wiki/Gerald_Spring_Rice,_6th_Baron_Monteagle_of_BrandonI was also recently visited by my parallel self from a parallel universe and a wizard merged us into one causing me to have memories from the parallel universe so now I am going to write about what happened in that universe to promote the English monarchist legitimist cause and how the rightful heirs can be restored and to teach a lesson on extramarital sex. It often causes disasters, though it is rare that it causes a Kingdom to fall like it did in the parallel universe. There are probably parallel universes where Republics fell over a cuckold.