Proper noun
English Wikipedia has an article on:Chaldean Catholic ChurchWikipedia
Chaldean Catholic Church
(Christianity) An Eastern Catholic particular church (sui juris), which uses the Chaldean rite, in full communion with the Holy See and the rest of the Catholic Church.
However, this line also reverted to the original Assyrian church, whereas the modern Chaldean Catholic Church was only founded in northern Mesopotamia 1830 AD. Source: Internet