Neriglissar probably died in April 556 BC. The last known documents dated to Neriglissar's reign are a contract from 12 April 556 BC at
Babylon and a contract from 16 April that same year from the city of
Uruk. The Uruk King List (IM 65066, also known as King List 5), a record of rulers of Babylon from
Shamash-shum-ukin (668–648 BC) to the
Seleucid king
Seleucus II Callinicus (246–225 BC), accords Neriglissar a reign of three years and eight months, consistent with the possibility that Neriglissar died in April. Labashi-Marduk thus became king of Babylon, but his reign proved to be brief. Because he reigned for such a short period of time, no inscriptions survive from his time as king.
Berossus erroneously gives Labashi-Marduk's reign as nine months (though it is possible that this is a scribal error) and states that Labashi-Marduk's "evil ways" led to his friends plotting against him, eventually resulting in the child king being beaten to death. The plotters then agreed that Nabonnedos (
Nabonidus), one of the plotters, should rule. The Uruk King List only gives Labashi-Marduk a reign of three months and contract tablets from Babylonia suggest that he might have ruled as briefly as just two months. It appears the transition in leadership was either a brief period of confusion after a discrete palace coup, or a brief civil war. Labashi-Marduk was still recognised as king at Uruk up until at least 19 June, and in the key city of
Sippar until at least 20 June. The earliest known document dated to the reign of Nabonidus at Sippar is from 26 June. However, the earliest document dated to Nabonidus at the city of Nippur is from 25 May and the latest documents dated to Labashi-Marduk at Babylon itself are from 24 May. The earliest known tablet dated to Nabonidus at Babylon is from 14 July. This evidence can be reconciled by positing that Nabonidus may have been recognised in the Babylonian heartland, including Nippur and Babylon, already on 25 May, whereas some outlying cities continued to recognise Labashi-Marduk (even though he quite possibly was dead at the time on account of a possible palace coup) as king until June. By the end of June 556 BC, tablets dated to Nabonidus are known from across Babylonia. Although Berossus refers to Labashi-Marduk as a child, it possible that he became king as an adult since commercial texts from two years earlier indicate that Labashi-Marduk was in charge of his own affairs at that time. Labashi-Marduk may still have been relatively young, however. One of the inscriptions of Nabonidus refers to Labashi-Marduk as "a young boy who had not yet learned proper behavior". The reason for the coup against Labashi-Marduk is unknown. It is possible that despite Labashi-Marduk and his father being well-connected and wealthy, they were ultimately seen as commoners, lacking noble blood. Though his mother would have connected him to the royal dynasty as the grandson of Nebuchadnezzar, it is also possible that Labashi-Marduk was the son of Neriglissar and another of his wives. Thus, Labashi-Marduk's rise to the throne might have signified a true break in the dynasty of Nebuchadnezzar and might as such have aroused opposition from the Babylonian populace. After Labashi-Marduk's death, the considerable wealth and estates of Neriglissar's family were confiscated and eventually taken up by
Belshazzar, the son of Nabonidus, who (as the main beneficiary) was likely the main orchestrator of the conspiracy against Labashi-Marduk. == References ==