Yes, that's right - sorry, was I confusing? Alfred, then Edward, who built on that and tidied up a lot of loose ends, then Athelstan the Historical Golden Boy.

Athelstan seems to get a good writeup as kings go, but most of what he achieves is based on the foundations laid by Alfred, so it might seem a bit odd to hand him an exciting new historical hat that Alfred and Edward didn't have. Though you could argue otherwise (and people do, that's the fun of it after all).