Иннокентий X
In 1649, Ranuccio refused to pay Roman creditors as his father had agreed in the treaty signed five years prior. He also refused to recognize the new bishop of Castro, Monsignor Cristoforo Giarda, appointed by Pope Innocent X. When the bishop was killed en route to Castro, near Monterosi, Pope Innocent X accused Duke Ranuccio, and his supporters, of murdering him.