Gelasius I, Pope
GELASIUS I, POPE, 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.
Note - this article incorporates content from Encyclopaedia Britannica, Eleventh Edition, (1910-1911)