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Pope Leo Installed as First American Pontiff in St. Peter’s Square Ceremony

The inaugural Mass featured ancient rituals, global leaders, and a homily emphasizing family, life, and peace through diplomacy.

Pope Leo XIV is the first American in the role but he has spent much of his life in Peru
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Overview

  • Pope Leo XIV, born in Chicago and the first American pontiff, officially began his papacy with an inaugural Mass at St. Peter’s Square on May 18, 2025.
  • The ceremony included the reception of the papal pallium and Fisherman’s Ring, symbolizing his role as the shepherd of the Catholic Church and successor to St. Peter.
  • Tens of thousands of attendees, including world leaders, royalty, and pilgrims, gathered to witness the event, which also featured a popemobile tour and rites at St. Peter’s tomb.
  • In his homily, Pope Leo reaffirmed the Church’s teachings on marriage and the dignity of life, while calling for multilateral diplomacy and interfaith dialogue to promote global peace.
  • The installation marks a pivotal moment for the Catholic Church, as Pope Leo XIV begins his leadership of 1.4 billion Catholics worldwide, emphasizing a message of unity and reconciliation.