The Order of St. Augustine (Ordo Sancti Augustini, O.S.A. - historically "Ordo Eremitarum Sancti Augustini," O.E.S.A. ), generally called Augustinians but not to be confused with the Augustinian Canons, are a Roman Catholic religious order which, although more ancient, were formally constituted in the thirteenth century and combined of several previous Augustinian...
