The Abbey-Principality of San Luigi and its dependent institutions enter into agreements with the Knights of San Rocco in Italy

The Knights of San Rocco are a knightly order organized as a Christian fraternity with close ties to the Roman Catholic Church who reflect the widespread devotion to San Rocco, a medieval Franciscan Tertiary whose life and miracles are the subject of many popular celebrations throughout Italy.

Pope Paul III instituted a confraternity of San Rocco, which in 1556 was raised to an archconfraternity by Pope Paul IV, and it is from this original foundation that the present fraternal order descends.

The Ordine Cristiano dei Cavalieri di San Rocco, based in Rome, has entered into a number of mutual agreements of recognition with the Abbey-Principality of San Luigi and its dependent institutions. The Prince-Abbot of San Luigi has been appointed an Honorary Brother for life and Honorary Chief Chaplain to the Order.

The Order has also issued the following instruments of friendship, recognition, twinning, accreditation, and partnership, which have been reciprocated by the Abbey-Principality:

Abbey-Principality of San Luigi

The Order of the Sacred Cup

The Order of the Crown of Thorns

The Order of the Lion and the Black Cross

The Order of Antioch

The Apostolic Episcopal Church

The Order of Corporate Reunion

The Prefectory of Great Britain of the Confraternitas Oecumenica Sancti Sepulcri Hierosolymitani

The Epiphany Guild

The International College of Arms of the Noblesse

The Constantinople Orthodox Institute

The Institute of Arts and Letters (London)

Partnerships with the Gran Commenda di Santi Giovanni e Lazzaro di Gerusalemme, Italy

The Gran Commenda di Santi Giovanni e Lazzaro di Gerusalemme is based in Italy under the protection of H.I.R.H. Prince don Ezra Annibale Foscari Widmann Rezzonico, Head of the Imperial House of Leopardi of Constantinople, and with the Grand Prior H.E. Arconte Antonino Iuculano. The Protectorate has entered into mutual agreements of full partnership, friendship, collaboration, accreditation and recognition with a number of the dependent institutions of the Abbey-Principality.

The Belarus Monarchist Association

The Constantinople Orthodox Institute

The Ecclesia Apostolica Divinorum Mysteriorum

The Grand Prix Humanitaire de France et des Colonies

The Institute of Arts and Letters (London)

The International College of Arms of the Noblesse

The Order of Antioch

The Order of the Crown of Thorns

The Order of the Lion and the Black Cross

The Order of the Holy Wisdom

The Byzantine Order of Leo V the Armenian

Partnerships with the Protettorato Imperiale di San Michele Arcangelo, Italy

The Protettorato Imperiale di San Michele Arcangelo is based in Italy under the protection of H.I.R.H. Prince don Ezra Annibale Foscari Widmann Rezzonico, Head of the Imperial House of Leopardi of Constantinople, and with the Grand Prior H.E. Arconte Antonino Iuculano. The Protectorate has entered into mutual agreements of full partnership, friendship, collaboration, accreditation and recognition with a number of the dependent institutions of the Abbey-Principality.

The Belarus Monarchist Association

The Constantinople Orthodox Institute

The Ecclesia Apostolica Divinorum Mysteriorum

The Grand Prix Humanitaire de France et des Colonies

The Institute of Arts and Letters (London)

The International College of Arms of the Noblesse

The Order of Antioch

The Order of the Crown of Thorns

The Order of the Lion and Black Cross

The Order of the Holy Wisdom

The Byzantine Order of Leo V the Armenian

The Order of the Sacred Cup

Agreement with the Università Popolare e della Terza Età “Mogadiscio”, Rome, Italy

The Università Popolare e della Terza Età “Mogadiscio” is a private university in Rome, Italy, registered with the government authorities in December 2025. It is in the Italian tradition of “popular universities” and “universities of the third age”, a special category of universities in Italy that are concerned with instruction and research pursued purely for academic, religious, social and cultural benefit.

The University has issued a Diploma of Friendship, Recognition, Twinning, Accreditation and Partnership to the Abbey-Principality of San Luigi, in perpetuity.

The University has also issued diplomas of friendship, recognition, twinning, accreditation and partnership to the following institutions of the Abbey-Principality:

 

The Constantinople Orthodox Institute

The Order of the Sacred Cup

The Royal Byelorussian Protectorate of the Order of St Lazarus

The Belarus Monarchist Association

The Order of the Crown of Thorns

The Anglican Association of Colleges and Schools

The Order of Corporate Reunion

The Royal House Polanie-Patrikios

The Royal Byelorussian Protectorate of the Order of St John

The Order of Ave Maria

The Regency of Lomar

The International College of Arms of the Noblesse

The Order of the Holy Wisdom

The Institute of Arts and Letters (London)

The Epiphany Guild

The Ecclesia Apostolica Divinorum Mysteriorum

The Apostolate of the Holy Wisdom

The Order of S. Teresa – The Little Flower

The Grand Prix Humanitaire de France et des Colonies

The Prefectory of Great Britain of the Confraternitas Oecumenica Sancti Sepulcri Hierosolymitani

The Catholicate of the West

The Order of the Lion and the Black Cross

The Order of Antioch

San Luigi institutions receive accreditation from the World Accreditation Board for Academies, Colleges, Schools, Universities, Rome, Italy

Several institutions of the Abbey-Principality have recently received accreditation from the World Accreditation Board for Academies, Colleges, Schools, Universities (WABACOSU), Rome, Italy. WABACOSU is a division of the Università Popolare e della Terza Età “Mogadiscio”  established to further high and humane standards in the provision of education, particularly for adults. The institutions of the Abbey-Principality have entered into a mutual full agreement of friendship, recognition, twinning, accreditation and partnership with WABACOSU.

The International College of Arms of the Noblesse

The Institute of Arts and Letters (London)

The Constantinople Orthodox Institute

Partnerships with Aracne Editrice, Aracne TV, La Bussola Edizioni and Prof. Dr. Gioacchino Onorati

A number of organizations under the auspices of the Abbey-Principality of San Luigi have received Diplomas of Cultural Merits from the publishing houses Aracne EditriceLa Bussola Edizioni and Aracne TV, based in Rome, Italy, and their founder Prof. Dr Gioacchino Onorati. A mutual relationship of recognition exists with these bodies.

The Apostolic Episcopal Church

The Byelorussian Patriarchate of St Andrew the First-Called Apostle

The Ecclesia Apostolica Divinorum Mysteriorum


The Institute of Arts and Letters (London)

The Anglican Association of Colleges and Schools

The International College of Arms of the Noblesse and the Institute of Arts and Letters (London) enter into partnerships with the Imperial and Royal House of Leopardi of Constantinople

The Abbey-Principality has enjoyed a long association with the Imperial House of Tommassini-Paterno Leopardi of Constantinople, which is currently based in exile in Milan, Italy. Several institutions of the Imperial House have entered into a mutual full agreement of friendship, recognition, twinning, accreditation and partnership with the University’s dependent institutions The International College of Arms of the Noblesse and The Institute of Arts and Letters (London).

Nobile Accademia Heracliana

International College of Arms of the Noblesse

Institute of Arts and Letters (London)

Nobile Accademia Giustinianae

The International College of Arms of the Noblesse

The Institute of Arts and Letters (London)

Accademia Costantiniana Leopardiana

The International College of Arms of the Noblesse

The Institute of Arts and Letters (London)

The Serenissima Accademia Foscari Widmann Rezzonico

The International College of Arms of the Noblesse

The Institute of Arts and Letters (London)

Archivio Storico (Historical File)

The International College of Arms of the Noblesse

The Institute of Arts and Letters (London)