Chaldea (/kælˈdiːə/) or Chaldaea was a Semitic nation between the late 10th and mid-6th centuries BC, after which its peoples were absorbed into Babylonia. It was located in the marshy land of the far southeastern corner of Mesopotamia and briefly came to rule Babylon. The short-lived 11th dynasty of the Kings of Babylon (6th century BC) is conventionally known to historians as the Chaldean Dynasty, although the last rulers, Nabonidus and his son Belshazzar, were known to be from Assyria.