Perto (Italian: Pertone) was the Abbot of Farfa from 854/7 to 872. Between 857 and 859 he received a privilege from the Emperor Louis II confirming a cella (probably a small monastic house) called Santa Maria del Mignone. Since this is the first time Santa Maria is mentioned in Farfa's possession it may have been acquired around this time by Perto. Louis's diploma confirmed privileges granted Farfa by his father, Lothair I, in 840. The imperial diploma forbade any financial imposition ("tribute or census") on Farfa by any pope or secular ruler ("duke or prince"). This diploma may have been aimed at courting good relations with the pope (either Benedict III or Nicholas II) or it may be associated with Louis's intervention in the Duchy of Spoleto in 860. In 864 Louis confirmed Farfa's posses