Sergius I was a pope who served from 687 to 701 AD. He was known for his efforts to strengthen the authority of the papacy during a time of political instability in Rome. His papacy is marked by the promotion of the Roman Catholic Church and the establishment of various church practices. During his tenure, Sergius I also focused on the relationship between the church and the Byzantine Empire. He worked to maintain peace and cooperation, which was crucial for the church's influence in the region. His contributions helped lay the groundwork for future papal authority.