Diocese of Santa Maria di Grottaferrata
B. Mariae Cryptaeferratae
Territorial abbey immediately subject to the Holy See · Byzantine tradition · Santa Maria di Grottaferrata, Italy
Byzantine (Italo-Albanian) rite territorial abbey near Rome, founded in 1004 by Saint Nilus of Rossano and immediately subject to the Holy See (not Latin rite as commonly listed). After a long vacancy, Manuel Nin Güell, O.S.B., was appointed in January 2026 to oversee it.
The see
- Rank
- Territorial abbey immediately subject to the Holy See
- Tradition
- Byzantine tradition
- Erected
- 26 September 1937
- Latin
- B. Mariae Cryptaeferratae
- Patron
- Saint Nilus of Rossano
- Annuario code
- 001000305
The see in figures
- Catholics
- 9
- Population
- 9
- Catholic share
- 100.0%
- Priests
- 4
- Catholics per priest
- 2
- Extent
- 1 km²
- Catholics per km²
- 9.0
of the people living within its bounds
Figures as recorded in the register, from the Annuario Pontificio and the see's own published statements. Shares and ratios are computed from the two figures shown beside them.
The bishop
- Apostolic Administrator
- Manuel Nin Güell
- Born
- 20 August 1956
- Birthplace
- El Vendrell
- Institute
- Congregazione Sublacense Cassinese dell'Ordine di San Benedetto
A see whose chair stands empty is recorded as vacant rather than filled with a guess. On what a bishop is, see the bishop.
The cathedral
Abbey Church of Santa Maria di Grottaferrata stands in Santa Maria di Grottaferrata, the church that holds the cathedra from which this see takes its name.
On what a cathedral is, see the cathedral; every see church on earth is gathered at the cathedrals.
What is kept by invitation
The record above is published because it is public: what this see is, when it was erected, who holds its chair, and where it stands among its neighbours.
The working record is not. The chancery's address, telephone and email, the clergy of the see, and the hours of Mass, confession and adoration in the parishes within it are kept for members, and a person reads every request.
Sources
The see's own website · Wikipedia
This record is compiled from the published statements of the see and the references of the Holy See, among them the Annuario Pontificio. On the method, see the keeping of the record. Whoever finds an error is asked, in charity, to write: [email protected].