Around the mid-19th century the Assyrians of Marga converted from the Church of the East to Catholicism .
Around the mid-19th century the Assyrians of Marga came under the authority of the Chaldean Patriarchate of Babylon .
Around the mid-19th century the Assyrians of Marga converted from the Church of the East to Catholicism and came under the authority of the Chaldean Patriarchate of Babylon .