Pope Theophilus served as the head of the Roman Catholic Church from 1285 to 1288. He was known for his efforts to strengthen the Church's authority and improve its financial stability during a time of political challenges in Europe. His papacy was marked by a focus on reform and the administration of Church properties. Theophilus was also involved in the ongoing conflicts between the Papacy and various European monarchs. His tenure was relatively short, but he played a role in the broader context of the Avignon Papacy and the shifting dynamics of power within the Church and its relationship with secular rulers.