(x) this is technically not true for some Anglican orders that later became Catholics? Maybe? (I never remember the rules of the ordinariate.) So maybe he could first become a priest in Anglican Church, then switch to Catholicism, then become a bishop, then a Cardinal, then a Pope? It's a long shot though.
edit: ahhh the married priests in Ordinariate cannot become bishops. So he would need to have first his marriage annulled I guess.
(She probably didn't actually exist, but it's interesting that until quite recently she was generally believed to have existed.)
but about the middle age popes we know quite a lot NOW. But it used to be different.
> all adult Catholics can become Pope
All adult male Catholics, though also see Pope Joan (probably didn't actually exist, but was generally believed to have existed until quite recently). There's also no actual age requirement, though in practice the youngest pope was _probably_ 18.
(Am off to read the article now. :) )