Various chronographic sources (including King List A [http://oracc.museum.upenn.edu/ribo/kinglists/kinglista/index.html] and the Dynastic Chronicle) record that the dynasty's second ruler Ea-mukīn-zēri sat on the throne for a short period of time (three to five months), was a usurper, and was buried in a swamp. Before seizing power, he may have been a priest at the city of Eridu; it is not certain if the Ea-mukīn-zēri mentioned as a witness on a kudurru (boundary stone) written up during the twelfth regnal year of Simbar-Šipak [http://oracc.museum.upenn.edu/ribo/babylon3/rulers/simbarshipak/index.html] and the king of Babylon with that name are one and the same man. As to be expected from such a short reign, no official inscriptions of his are known.
Jamie Novotny
Jamie Novotny, 'Ea-mukīn-zēri (1008 BC)', RIBo, Babylon 3: The Inscriptions of the Second Dynasty of the Sealand, The RIBo Project, a sub-project of MOCCI, 2016 [http://oracc.museum.upenn.edu/ribo/babylon3/rulers/eamukinzeri/]