Pope Innocent II served as the head of the Roman Catholic Church from 1130 to 1143. He was born as Gregorio Papareschi and became pope during a time of political turmoil in Italy. His papacy was marked by efforts to strengthen the authority of the church and to resolve conflicts with the Holy Roman Empire. During his reign, Innocent II supported the Second Crusade, which aimed to reclaim territories lost to Muslim forces. He also worked to promote church reforms and address issues of clerical corruption. His leadership helped to solidify the papacy's influence in European politics.