Until there's a second, simply call him Francis
AFPVATICAN CITY -- Latin America's first pope — Jorge Mario Bergoglio — will be known as Francis, rather than Francis I, until such time as a future pope chooses the same name.
March 15, 2013, 12:37 am TWN
“Cardinalem Bergoglio qui sibi nomen imposuit Franciscum,” the Vatican's proto-deacon said as he presented the new leader of the world's 1.2 billion Catholics to the world on Wednesday — crucially without adding the world “Primum” (the first).
He will remain a plain Francis until a successor calls himself Francis II — if any should choose to do so — at which point he will go down in history as Francis I.
The first pope to add “the first” to his name was Cardinal Albino Luciani, who took the name John Paul I in 1978.