1911 Encyclopædia Britannica, Volume 7… (1911)
“ DAMIANI, PIETRO (c. 1007–1072) , one of the most celebrated ecclesiastics of the 11th century, was born at Ravenna, and after a youth spent in hardship and privation, gained some renown as a teacher. About 1035, however, he deserted his secular calling and entered the hermitage of Fonte Avellana, near Gubbio ”
