(A.D. 1478) The Pazzi Conspiracy, where the The Roman Catholic bishop of Rome who is regarded as the successor of the chief apostle, Peter, and as the Vicar of Christ is the holder of the Aposto... more (Sixtus IV) was part of the conspiracy to murder Lorenzo and Guiliano de Lorenzo de Medici (A.D. 1469–1492) was an Italian banker and statesman in the Republic of Florence. He became the de facto ruler of Florence and use... more, but Lorenzo survives the attack during the Comes from the Latin word “missa” that literally means dismissed and refers to the practice in the 6th century of dismissing those in attendance d... more in the cathedral in Florence. Both of the victims were fathers of future popes ((A.D. 1475–1521) Leo X was Bishop of Rome and Pope from A.D. 1513 until his death in 1521. He was loose with papal finances and permitted the exchan... more and (A.D. 1478–1534) Clement VII was Pope from A.D. 1523 until his death in 1534. Clement VII had the misfortune of being Pope during a highly contentio... more).