The "Consuetudines Farfenses" drawn up about 1010 under the supervision of Guido, successor to Hugues of Farfa, bear witness to the care with which Hugues organized the monastic life at Farfa. Under the title "Destructio Monasterii", Hugues himself wrote a history of the sad period previous to his rule; and again under the title "Diminutio Monasterii", and "Querimonium", he related the temporal difficulties that encompassed Farfa owing to the ambition of petty Roman lords. These works are very important for the historian of the period.