The ancient Chaldeans seem to have migrated into Mesopotamia sometime between c. 940–860 BCE, a century or so after other new Semitic arrivals, the Arameans and the Suteans, appeared in Babylonia, c. 1100 BCE. They first appear in written record in the annals of the Assyrian king Shalmaneser III during the 850s BCE.

When did the Chaldeans start and end?

The Chaldean Empire (625 - 539 B.C.)

How old are the Chaldeans?

Chaldeans are Aramaic-speaking, Eastern Rite Catholics. They have a history that spans more than 5,500 years, dating back to Mesopotamia, which was known as the cradle of civilization and is present-day Iraq.