Civic peace was constantly disturbed in the 14th century by struggles between the party representing the people ("Raspanti") and the nobles ("Beccherini"). After the assassination in 1398 of Biordo Michelotti, who had made himself lord of Perugia, the city became a pawn in the Italian Wars, passing to Gian Galeazzo Visconti (1400), to Pope Boniface IX (1403), and to Ladislas of Naples (1408–14) before it settled into a period of sound governance under the "Signoria" of the condottiero Braccio da Montone (1416–24), who reached a concordance with the Papacy. Following mutual atrocities of the Oddi and the Baglioni families, power was at last concentrated in the Baglioni, who, though they had no legal position, defied all other authority, though their bloody internal squabbles culminated in a massacre, 14 July 1500. Gian Paolo Baglioni was lured to Rome in 1520 and beheaded by Leo X; and in 1540 Rodolfo, who had slain a papal legate, was defeated by Pier Luigi Farnese, and the city, captured and plundered by his soldiery, was deprived of its privileges. A citadel known as the "Rocca Paolina", after the name of Pope Paul III (Italian: Paolo), was built, to the designs of Antonio da Sangallo the Younger ""ad coercendam Perusinorum audaciam"."