(Vatican Radio) The Holy See Press Office announced on Friday Pope-emeritus Benedict XVI will attend the encounter with Pope Francis and the elderly on Sunday morning in St. Peter’s Square. The encounter is preceding the Mass with Grandparents and the Elderly scheduled to begin at 10:30 am. More than 40 thousand seniors and grandparents from more than 20 countries – many from Italy, Spain, Argentina and the United States - will participate in the morning’s liturgy. The Pontifical Council for the Family says more than fifty elderly priests from parishes around the world will concelebrate the liturgy with the Holy Father. The main concelebrants will include the oldest priest of the Rome diocese, and one elderly priest each from the Democratic Republic of Congo, India and Argentina. Pope-emeritus Benedict XVI will not be at the Mass.