Sylvester II becomes the first Frenchman to be elected pope. Because of his close relationships in France, he was instrumental in bringing an end to the Carolingian dynasty by helping Hugh Capet become king of France, starting the Capetian dynasty.
A scholar with interests in mathematics and astronomy, a number of rumors will develop about him being involved with magic, but that's simply an expression of the anti-intellectualism of the age.
Pope Sylvester II will be a strong defender of the independence and authority of the papacy, but he will also work closely with Emperor Otto III to reform the many abuses occurring in the church — including simony, nepotism, and clerical marriage. Unfortunately, he's too close to Otto III; when the people of Rome revolt against foreign domination, Pope Sylvester II has to flee with the emperor.