EUGENIO VULGARIO. - An ecclesiastic who lived between the end of the 9th century and the first half of the 10th. In Naples he taught grammar and rhetoric; perhaps he spent some time at Montecassino, then went to Rome, where he lived as a penitent monk. He died shortly after 950, but the place of his death is uncertain.
Around 907 he intervened in favour of pope Formoso in the controversies concerning ordinations, writing the dialogue Super causa et negotio Formos papae (PL. 129, 1103-12, but under the name of Ausilius), and also De causa Formosiana libellus (editio princeps in E. Dümmler, Ausilius und Vulgaris. Quellen und Forschungen zur Geschichte des Papstthums im Anfange des X. Jahrhunderts, Lipsia 1866, pp. 117-99). There also remain some poems and letters by E. (in MGH, Poet., IV, 1, p. 406 ff., and E. Dümmler, op. cit., pp. 139-56).