Giulio Belanti of Siena, of whom I have spoken before, from the hate he bore Pandolfo Petrucci, who had given him his daughter to wife and afterwards taken her from him, resolved to murder him, and thus chose his time. Almost every day Pandolfo went to visit a sick kinsman, passing the house of Giulio on the way, who, remarking this, took measures to have his accomplices ready in his house to kill Pandolfo as he passed. Wherefore, placing the rest armed within the doorway, one he stationed at a window to give the signal of Pandolfo’s approach. It so happened however, that as he came nigh the house, and after the lookout had given the signal, Pandolfo fell in with a friend who stopped him to converse; when some of those with him, going on in advance, saw and heard the gleam and clash of weapons, and so discovered the ambuscade; whereby Pandolfo was saved, while Giulio with his companions had to fly from Siena. This plot accordingly was marred, and Giulio’s schemes baulked, in consequence of a chance meeting. Against such accidents, since they are out of the common course of things, no provision can be made. Still it is very necessary to take into account all that may happen, and devise what remedies you can.
It now only remains for us to consider those dangers which follow after the execution of a plot. These in fact resolve themselves into one, namely, that some should survive who will avenge the death of the murdered prince. The part of avenger is likely to be assumed by a son, a brother, or other kinsman of the deceased, who in the ordinary course of events might have looked to succeed to the princedom. And such persons are