Holy Apostolic SeeUnited Roman-Ruthenian Church
The Catholicate of Rome-Ruthenia

Jurisdiction and Mission

 The patriarchal jurisdiction

Jurisdiction and Mission

The Catholicate of Rome-Ruthenia gives patriarchal form and unity to the ecclesiastical life entrusted to the Roman-Ruthenian Pope. Within that one ministry, diocesan, metropolitan, and patriarchal responsibilities are exercised at distinct levels, each serving the same Apostolic faith and mission.

One ministry · three levels of jurisdiction

Diocesan

Diocese of Rome-Ruthenia

The papal diocesan jurisdiction and the immediate particular Church entrusted to the Roman-Ruthenian Pope in his episcopal office.

Metropolitan

Metropolitan See of Aquileia

The papal provincial and metropolitan jurisdiction, continuing the Aquileian inheritance and coordinating ecclesiastical life at the metropolitan level.

Patriarchal

Catholicate of Rome-Ruthenia

The patriarchal jurisdiction exercised by the Roman-Ruthenian Pope as Catholicos, embracing the faithful and constituent jurisdictions for whom he serves as patriarch.

Ecclesiastical scope

The historic West and Ruthenian inheritance

The Catholicate’s jurisdiction corresponds broadly to the lands and peoples historically associated with the former Patriarchate of the West, together with the Ruthenian territories associated with the titular Pontifical Kingdom of Ruthenia. Its pastoral life is not confined by modern national borders: it serves those communities, clergy, and faithful who belong to its patriarchal communion wherever they may be found.

In practical terms: those within the United Roman-Ruthenian Church for whom the Roman-Ruthenian Pope is the patriarch belong to the Catholicate of Rome-Ruthenia.

The union of 2023

Ancient inheritances gathered into one Catholicate

The present Catholicate was formed in the ecclesiastical union of 2023 through the merger of the former Anglican Patriarchate of Rome and the Gallo-Russo-Byzantine Catholicate. The union brought their complementary Western and Eastern Apostolic inheritances into the present United Roman-Ruthenian Church and established a single patriarchal jurisdiction under the Roman-Ruthenian Pope.

This union did not erase the traditions received through the constituent bodies. It ordered them within a common ecclesiastical life, preserving the Church’s Latin, Byzantine, Anglican, Old Roman Catholic, and Ruthenian patrimonies in harmony.

Our mission

Faithful continuity in worship, teaching, and pastoral life

Guard the Apostolic faithPreserve and teach the Orthodox and Catholic faith received from the Apostles and witnessed in the historic life of the Church.
Sustain sacramental lifeMaintain reverent worship, Apostolic ministry, and the Church’s liturgical and devotional inheritance.
Serve clergy and faithfulProvide patriarchal order, formation, pastoral support, and canonical coherence across constituent jurisdictions and communities.
Unite East and WestBear living witness to the harmony of the Church’s Eastern and Western patrimonies within one Apostolic communion.