 Complete the following phrase:  The family is first mentioned in the 13th century with one Prontaguerra Ready-at-War da Varano, a powerful Guelph leader, who inaugurated the traditional appartece of the family to that party. His descendant Gentile was also a Guelph leader in Camerino when the town was destroyed by Manfred of Sicily. In the aftermath of the Ghibelline defeat at the 