Holy See of the East Holy See of the East Holy See of the East is an honorary name of the sees of a number of Christian churches in the Middle East and India. The Head & Father of the Marthoma Nazrani Church and the Gate of All India is commonly known as the successor to the Holy Apostolic See of St. Thomas. The Seat of the Patriarchs of the Chaldean Catholic Church and the Nestorian Catholicos-Patriarchs which emerged from the Ancient Church of the East is also a part of the Holy See of the East. The group of Saint Thomas Christians who left
Administration of the Property of the Holy See the Patrimony of the Apostolic See. Administration of the Property of the Holy See Administration of the Property of the Holy See (, abbreviated ABSS) was a commission that, until 1967, administered the property of the Holy See other than the money in cash and Italian government bonds received when the Financial Convention attached to the Lateran Treaty of 1929 was implemented. Its origin lay in the decision of Pope Leo XIII on 9 August 1878 to appoint his then Secretary of State also as Prefect of the Sacred Palace and Administrator of the patrimony remaining to the Holy See