Pope Francis breaks the mould again with ceremony at prison instead of St Peter's He often held Masses in the homes of seniors, and in jails and hospitals, travelled to work by bus and eschewed a grand residence in favour of a small apartment. Francis will have his first meeting with his predecessor, Pope Emeritus Benedict XVI, on Saturday. The 76-year-old Argentininian will be flown from the Vatican by helicopter to Castel Gandolfo, a centuries-old castle in the hills south of Rome where the Pope Emeritus has been staying since his historic resignation on Feb 28. The pair, both wearing the white vestments of the papacy, will sit down for a meeting and then have lunch together before Francis flies back to the Vatican. For centuries, Popes have remained in office until they died, so it is extremely unusual to have an ex-Pope co-existing with his successor. The only Pope to willingly resign was Celestine V, a mountain hermit who was appalled to be elected pontiff in 1294. The bearded holy man hated the role so much that he abdicated after just five months and nine days. Things did not end well for him - he was locked up by his successor, Pope Boniface VIII, and died in 1296. Benedict XVI faces a rather more comfortable future. Within a few weeks he is expected to leave Castel Gandolfo and move into a former convent within the walls of the Vatican, just a stone's throw from Francis's official apartments. Confusing matters further, the Vatican has said that he should still be addressed as "Your Holiness" and has decreed that he retains his title of Benedict XVI rather than reverting to Joseph Ratzinger, by which he was known before he was elected Pope in 2005.