Original: The Chaldean Catholic Church was established, and its first patriarch was proclaimed patriarch of "Mosul and Athur" (Nineveh and Assyria) on Feb. 20, 1553 by Pope Julius III.
Simplified: Chaldean Catholic Church was established, its first patriarch was proclaimed patriarch of "Mosul and Athur" (Nineveh and Assyria) on Feb. 20, 1553 by Pope Julius III.