Recent liturgical books, and the General Instruction of the Roman Missal, do not give any guidance as to the wording to be used during the Eucharistic Prayer when mentioning the Bishop of Rome and the Ordinary during tempus sede vacante.
Research on this matter has referred back to the pre-conciliar editions of The Ceremonies of the Roman Rite Described by Fortescue where it suggests that during Tempus Romani Sede Vacante any reference to the Roman Pontiff is omitted;
Therefore during the Canon of the Mass in the Extraordinary Form of the Roman Rite, instead of the phrase “una cum famulo tuo Papa nostro N. et Antistite nostro N.” is substituted “una cum Antistite nostro N.”; or in the usage of the Fraternity “una cum Ordinario nostro N.”
When celebrating in the Ordinary Form in the usage of the Fraternity, using Eucharistic Prayer I, the phrase “together with your servant N. the Pope and N. our Ordinary” is substituted by “together with N. our Ordinary“; with a similar substitution in Eucharistic Prayers II, III, and IV.
During this period of Sede Vacante we pray for all those charged with the election of a new Bishop of Rome, that the Holy Spirit may guide them in their deliberations; and we pray for Benedict XVI, the Pope Emeritus, that he may enjoy a blessed retirement.
Rev Fr Charles FSDM VG
1 March 2013