Amicus began his ecclesiastical life as a monk in the Benedictine congregation of Montecassino.
Between 1109 and 1117, he became abbot of the monastic community of S. Vincenzo al Volturno,[1] "sito intus hanc... capuanum civitatem.
"[2] During a papal visit to Montecassino in 1117, Pope Paschal II ordained Amicus a priest and appointed him Cardinal-priest of Ss.
[7] During the enthronement ceremony, Cencius Frangipani and his supporters broke into the monastery, seized and abused the pope and others, and carried Gelasius off to one of their prisons.
In March 1128 at Capua, he received a privilege for his monastery of S. Vincenzo granted by Prince Robert II of Capua, "in quo etiam dominus Amicus venerabilis cardinalis Sancte romane aecclesiae abbas pr(a)eesse dinoscitur...."[9] Cardinal Amicus, O.S.B.Casin., died on 4 January in a year after 1130.