Manning has 1 already. He is 37 now, tying him for second, as the oldest winning SB qb. (oops, am I presumptuous?)
He could also be the first qb to lead 2 teams to Super Bowl wins.
I suppose you could say that if you limit yourself to only the years when the NFL championship has been called the "Super Bowl." But there already has been a QB to win an NFL championship for two different teams: Norm Van Brocklin, who won for the Rams in 1951 (splitting the duties with Bob Waterfield) and for the Eagles in 1960.