Pope Francis

Pope Francis arrives at the St. Francis Basilica to lead a mass as part of his pastoral visit in Assisi, Italy, Oct. 4, 2013.

Pope Francis greets faithful upon arrival for his weekly general audience in St. Peter's Square at the Vatican, Sept. 18, 2013.

Then Archbishop of Buenos Aires Cardinal Jorge Bergoglio leads a mass during the annual gathering and pilgrimage to the church dedicated to Saint Cajetan, the patron saint of labor and bread, in Buenos Aires, August 7, 2009.

Then Archbishop of Buenos Aires Cardinal Jorge Bergoglio greets people during the annual gathering and pilgrimage to the church dedicated to Saint Cajetan in Buenos Aires, August 7, 2009.

Argentine President Cristina Fernandez de Kirchner greets then Argentine Cardinal Jorge Bergoglio at the Basilica of Lujan, Dec. 22, 2008.

Then Pope Benedict greets then Archbishop of Buenos Aires Cardinal Jorge Mario Bergoglio at the Vatican, Jan. 13, 2007.

Then Argentine Cardinal Jorge Bergoglio washes the feet of two newly born children on Holy Thursday at the Buenos Aires' Sarda maternity hospital, March 24, 2005.

Jorge Bergoglio is pictured in this undated handout photo courtesy of Clarin.

Jorge Bergoglio poses in this undated handout photo courtesy of Clarin.

Jorge Bergoglio and his family are seen in this undated handout photo provided by Clarin.