why do popes pick a new name

Popes choose a new name upon their election as a symbolic act marking their new stage of life and mission as the leader of the Catholic Church. This tradition began around the 6th century when Pope John II, originally named Mercurius, changed his pagan-sounding name. By the 11th century, it became standard practice for popes to adopt a new name rather than keep their birth name. The chosen name often honors a previous pope, saint, or reflects the new pope's intended direction or vision for his papacy. This choice serves as a public indication of the new pope's spiritual inspiration and priorities. The practice is similar to royalty adopting regnal names and symbolizes a sort of second birth or new identity in service to the Church. Names are often selected to honor admired predecessors or saints, and sometimes to signal continuity or reform. For example, Pope Francis chose his name to honor St. Francis of Assisi, reflecting his dedication to peace and care for the poor.