Paschal II was a pope who served from 1099 to 1118. He is known for his efforts to strengthen the authority of the papacy and for his involvement in the Investiture Controversy, a conflict between the church and secular rulers over the appointment of bishops. During his papacy, Paschal II supported the First Crusade and worked to promote peace within the church. He also faced challenges from various political factions, including the Holy Roman Emperor Henry V, which influenced his decisions and policies regarding church governance and authority.