GELASIUS  , the name of two popes . GELASrus I.,

pope from 492 to 496, was the successor of Felix III . He confirmed the estrangement between the Eastern and Western churches by insisting on the removal of the name of Acacius, bishop of Constantinople, from the diptychs . He is the author of De duabus in Christo naturis adversus Eutychen et Nestorium . A great number of his letters has also come down to us . His name has been attached to a Liber SacramentoruM anterior to that of St Gregory, but he can have composed only certain parts of it . As to the so-called Decretum Gelasii de libris recipiendis et non recipiendis, it also is a compilation of documents anterior to Gelasius, and it is difficult to determine Gelasius's contributions to it . At all events, as we know it, it is of Roman origin, and 6th-century or later . (L .