[Footnote 34: The papal advocates, Zacagni and Fontanini, might
justly claim the valley or morass of Commachio as a part of the
exarchate. But the ambition of including Modena, Reggio, Parma,
and Placentia, has darkened a geographical question somewhat
doubtful and obscure Even Muratori, as the servant of the house
of Este, is not free from partiality and prejudice.]