I apologize for the dupe above.
Someone may have already brought this up, but the tridentene mass is distinct from the Liturgy of St. Gregory. The Tridentene mass is that
of Pope St. Pius V dating from July 14, 1570 via apostolic constitution Quo Primum and named after the council of Trent. The Liturgy (Mass) of St. Gregory predates it by many centuries.
Father, do you have a reliable link to this liturgy? The Liturgy of St. Gregory Mass Ordinaries I have read online are almost identical to the Tridentine ordo, save for a Byzantine epiclesis after the simili modo. I can't find a Latin recension of the Liturgy of St. Gregory online, so I can't make a true comparison of the Tridentine ordo and the St Gregory Ordo. In the Roman Church, the Missale Romanum does not officially exist in modern vernacular translation. There was a 16th century Church Slavonic translation of the Tridentine rites for the Czechs, Slovaks, and Croatians, but it is now an extinct translation.
I found this Ordo for the Divine Liturgy of St. Gregory
for the AWRV. My apologies -- the Byzantine Epiclesis is between the supra quae
and the supplices te rogamus
. This makes sense, since Rome considers the supplices
to be an "ascending" epiclesis. Other than that, the Ordinary is a very literal translation of the Tridentine ordo.
That does not mean, however, that there is some other version of the liturgy that does not resemble the Tridentine reforms.
If I were a WRO priest I would probably just celebrate in Latin from a standard Missale Romanum
and simply recite the epiclesis in Greek silently. If the Liturgy of St. Gregory is 99% identical to Missale Romanum
1962, I don't see the need for a different service book. If the WRO missal contains significantly different Mass propers and prefaces, then I suppose WRO priests must use that book. However, that leaves priests who would rather say Mass in Latin in a bind. I doubt that a WRO missal would have the entire Mass, ordinary, propers, and prefaces, in Latin.
Can an eparch grant a dispensation to celebrate from the Missale Romanum
and merely insert the required Byzantine prayers as necessary?