The Chaldean dynasty, also known as the Neo-Babylonian dynasty and enumerated as Dynasty X of Babylon, was the ruling dynasty of the Neo-Babylonian Empire, ruling as kings of Babylon from the ascent of Nabopolassar in 626 BC to the fall of Babylon in 539 BC. The dynasty, as connected to Nabopolassar through descent, was deposed in 560 BC by the Aramean official Neriglissar (r. 560–556 BC), though he was connected to the Chaldean kings through marriage and his son and successor, Labashi-Marduk (r. 556 BC), might have reintroduced the bloodline to the throne. The final Neo-Babylonian king, Nabonidus (r. 556–539 BC), was genealogically unconnected to the previous kings, but might, like Neriglissar, also have been connected to the dynasty through marriage.
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👉 Chaldean dynasty in the context of Neo-Babylonian Empire
The Neo-Babylonian Empire or Second Babylonian Empire, historically known as the Chaldean Empire, was the last polity ruled by monarchs native to ancient Mesopotamia. Beginning with the coronation of Nabopolassar as the King of Babylon in 626 BC and being firmly established through the fall of the Assyrian Empire in 612 - 609 BC, the Neo-Babylonian Empire was conquered by the Achaemenid Persian Empire in 539 BC, less than a century after the founding of the Chaldean dynasty.The defeat of the Assyrian Empire and subsequent return of power to Babylon marked the first time that the city, and southern Mesopotamia in general, had risen to dominate the ancient Near East since the collapse of the Old Babylonian Empire (under Hammurabi) nearly a thousand years earlier. The period of Neo-Babylonian rule thus saw unprecedented economic and population growth throughout Babylonia, as well as a renaissance of culture and artwork as Neo-Babylonian kings conducted massive building projects, especially in Babylon itself, bringing back many elements from the previous 2,000 years of Sumero-Akkadian culture.
The Neo-Babylonian Empire retains a notable position in modern cultural memory due to the portrayal of Babylon and its greatest king Nebuchadnezzar II in the Bible. The biblical account of Nebuchadnezzar describes his military campaign against the Kingdom of Judah, and in particular the Babylonian siege of Jerusalem in 587 BC which resulted in the destruction of Solomon's Temple and the subsequent Babylonian captivity. The Bible also describes the majesty of Nebuchadnezzar's rule and his sympathetic relationship with his Jewish captives. Babylonian sources describe Nebuchadnezzar's reign as a golden age that transformed Babylonia into the greatest empire of its time.
Chaldean dynasty in the context of Nabonidus
Nabuna'eed (Neo-Babylonian Akkadian: 𒀭𒀝𒈾𒀪𒀉, romanized: Nabû-naʾid, Hellenized as Nabonidus meaning "May Nabu be exalted" or "Nabu is praised") was the last king of the Neo-Babylonian Empire, ruling from 556 BC to the fall of Babylon to the Achaemenian Empire under Cyrus the Great in 539 BC. Nabonidus was the last native ruler of ancient Mesopotamia, the end of his reign marking the end of thousands of years of Sumero-Akkadian states, kingdoms and empires. He was also the last independent king of Babylon. Regarded as one of the most vibrant and individualistic rulers of his time, Nabonidus is characterised by some scholars as an unorthodox religious reformer and as the first archaeologist.
The origins of Nabonidus, his connection to previous royalty, and subsequently what claim he had to the throne remain unclear, given that Nabonidus made no genealogical claims of kinship to previous kings. This suggests that he was neither related nor connected to the Chaldean dynasty of Babylonian rulers. However, he is known to have had a prominent career of some kind before he became king. It is possible that he was connected to the Chaldean kings via marriage, possibly having married a daughter of Nebuchadnezzar II (r. 605–562 BC). Nabonidus's mother, Adad-guppi, was of Assyrian ancestry. His father, Nabu-balatsu-iqbi, of whom little is known, may also have been either Assyrian or Babylonian. Some historians have speculated that either Adad-guppi or Nabu-balatsu-iqbi were members of the Sargonid dynasty, rulers of the Neo-Assyrian Empire until its fall in 609 BC.
Chaldean dynasty in the context of Nabonassar (7th century BC)
Nabonassar (Babylonian cuneiform: 
Nabû-nāṣir, meaning "Nabu (is) protector") was a high priest (šatammu) of the Eanna temple in Uruk in the reign of the Neo-Assyrian king Esarhaddon (r. 681–669 BC), attested as such from 678 to 675 BC. He is very likely to have been the father of Nebuchadnezzar, governor of Uruk under Esarhaddon's successor Ashurbanipal (r. 669–631 BC), and the grandfather of Nabopolassar (r. 626–605 BC), the first king of the Neo-Babylonian Empire, making Nabonassar the progenitor of the Chaldean dynasty of Babylonian kings.
In addition to Nebuchadnezzar, it is probable that Nabonassar was also the father of Bēl-uballiṭ, who is recorded as high priest of the same temple in 642 BC, and of Bel-uballit's colleague and brother, Nabu-ušabši.