Private rancor induced Francesco de' Pazzi to second their views and to stimulate their passion.

The three between them hatched a plot which was joined by Salviati, Archbishop of Pisa, another private foe of the Medici, and by Giambattista Montesecco, a captain well affected to the Count Girolamo.

The first design of the conspirators was to lure the brothers Medici to Rome, and to kill them there.

But the young men were too prudent to leave Florence.

Pazzi and Salviati then proceeded to Tuscany, hoping either at a banquet or in church to succeed in murdering their two enemies together.