Nestorianism derives from the works of Nestorius, and also by other sources that are related to his teachings in the fields of Mariology and Christology. Nestorian Mariology rejects the title Theotokos ("God-bearer") for Mary, thus emphasizing distinction between divine and human aspects of the Incarnation of Christ. Nestorian Christology promotes the concept of a prosopic union of two natures (divine and human) in Jesus Christ.

Here, the title "Jacobite" should not be confused with the English Jacobites, a  political movement to resurrect the Stuart kingship in the 17-18th century. It refers to The Syriac Orthodox Church  (the Syriac Orthodox Patriarchate of Antioch and All the East), which is informally known as the Jacobite Church.

It was founded by Jacob Baradaeus (aka Jacob bar Addai or Jacob bar Theophilus) or Saint Jacob, who was the Bishop of Edessa from 543 until his death in 578. Jacob's missionary efforts helped establish the non-Chalcedonian Syriac Orthodox Church, and ensured its survival despite persecution.

The Maronites are a Christian sect native to the Levant region of the Middle East.
They derive their name from the Syriac Christian saint Maron, some of whose followers migrated to the area of Mount Lebanon from their previous place of residence around the area of Antioch.

The Roman Catholic Church, is the largest Christian sect with about 1.3 adherents. It has, famously, its own "country"—the Vatican. The church consists of 24 particular churches and almost 3,500 dioceses and eparchies around the world all presided over by the pope. The bishopric of Rome, known as the Holy See, is the central governing authority of the church.

This sect, formally known as The Brotherhood of Saint Gregory grew out of the reverence for Saint Gregory who was Pope Gregory 1.

The First World War