[QUOTE=Alive At Both Ends]
Nice try, but the Anglo-Saxon monarchy did not operate on the basis of primogeniture. After the king died, the next king was whoever the Witan decided he should be - there was no “legitimate heir”. It’s true that they usually chose a member of the ruling family for the job, but there wasn’t any requirement for them to choose the late king’s eldest son, or any relative at all. In practice the job went to whoever had the most power and influence at the time.
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Well, really, one did have to be of Royal blood- but in several cases (the various sons of King Æthelwulf, that last of which was Alfred the Great) a brother succeeded another. Edmund I succeded his half-brother (Æthelstan).
http://www.britannia.com/history/monarchs/mon11.html
On the death of Eadred, who had no children, Eadwig was chosen to be king since he was the oldest of the children in the natural line of the House of Wessex
His brother Edgar succeeded him.
Ethelred II, the Unready, succeded his half-brother, Edward II, after Edward was murdered. One of the worst Kings of England.
Edward III, the Confessor was a brother to Edmund II, (Ironside).
HaroldII was Edward the Confessor’s Brother in Law.
Edgar the Atheling was a Grandson of Edmund Ironside.
In theory, there was three steps- showing Royal Blood, Voting in by the Witan, and then “acclamation” by the City of London. However, none of this was written in stone. William the Bastard was a distant kinsman of Edward the Confessor. He went through the motions of getting the Witan to accept him (more or less by sword-point), and London to acclaim him.
Later Kings of England weren’t always the eldest son, either. Henry I was WilliamII brother.
Edward IV was not a child of any of the Henry’s, he was the grandson of EdIII.
Richard III succeeded his brother EdIV.
Mary and Elizabeth both succeeded their little known Brother EdVI, Henry 8’s son.
Henry VII was about as close you can get to “no relation” (in a way, he was EdIII’s great, great grandson) , but his father had married a Queen of England.
James II succeeded his brother Charles II.
And so forth.
Harold II was about the closest we come to “picking someone who was the best for the job”, as the Aethling was simply too young, and the Vikings would have deposed him.