At that time there were four brothers of the name, Marcantonio, Piero, Alessandro, and Curzio; and the first two quarrelled mortally, wherefore Piero caused Marcantonio to be murdered by hired assassins. Of these men, Alessandro, who dearly loved both his murdered brother and his younger brother Curzio, slew one with his own hand, but the rest escaped, and he swore a blood feud against Piero. Yet, little by little, his anger subsided, and there was a sort of armed peace between the two. Then it happened that Piero, who was rich, fell in love with his own niece, the beautiful Olimpia, the dowerless daughter of his other brother Curzio; and Curzio, tempted by the hope of wealth, consented to the match, and the dispensation of the Church was obtained for the marriage. It is not rare, even nowadays, for a man to marry his niece in Europe, whether they be Catholics or Protestants, but the Italians are opposed to such marriages; and Alessandro Mattei, pitying the lovely girl, whose life was to be sold for money, and bitterly hating the murderer bridegroom, swore that the thing should not be. Yet he could not prevent the wedding, for Piero was rich and powerful, and of a determined character. So Piero was married, and after the wedding, in the evening, he gave a great feast in his house, and invited to it all the kinsmen of the family, with their wives. And Alessandro Mattei came also, with his son, Girolamo, and bringing with him two men whom he called his friends, but whom no one knew. These were hired murderers, but Piero smiled pleasantly and made a pretence of being well satisfied. The company feasted together, and drank old wine, with songs and rejoicings of all sorts. Then Alessandro rose to go home, for it was late, and Piero led him to the door of the hall to take leave of him courteously, so that all the kinsfolk might see that there was peace, for they were all looking on, some sitting in their places and some standing up out of respect for the elder men as they went to the door. Alessandro stood still, exchanging courtesies with his brother, while his servants brought him his cloak, and the arquebuse he carried at night for safety; for he had his palace across the Tiber, where it stands today. Then taking the hand-gun, he spoke no more words, but shot his brother in the breast, and killed him, and fled, leaving his son behind, for the young man had wished to stay till the end of the feast, and the two hired assassins had been brought by his father to protect him, though he did not know it.