Enarratio vitae et miraculorum sancti patris nostri Gregorii Agrigentinorum episcopi
Leontius, presbyter monachus et praefectus monasterii sancti Sabae urbis Romae, Enarratio vitae et miraculorum sancti patris nostri Gregorii Agrigentinorum episcopi, in: Patrologiae Cursus Completus, Series Graeca 98, edited by Migne, J. P., Paris, 1857-1866: cols. 594–716.
♦ Seventh-century abbott of the monastery of St. Sabas in Rome Biography of Gregory, bishop of Agrigentum in Sicily 548–630.
♦ Seventh-century abbott of the monastery of St. Sabas in Rome Biography of Gregory, bishop of Agrigentum in Sicily 548–630.