and had him deposed and killed. If Berossus is to be believed, Neriglissar was the leader of this conspiracy. It is likely that the conflict between Amel-Marduk and Neriglissar was a case of inter-family discord rather than some other form of rivalry. Neriglissar's claim to the throne likely came through his marriage to Nebuchadnezzar's daughter, who might have been significantly older than either of Nebuchadnezzar's sons (as she is attested significantly earlier in her father's reign). Reign 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