The name of the penultimate ruler of the Second Dynasty of Isin [http://oracc.museum.upenn.edu/ribo/babylon2/index.html] is only partly preserved in Babylonian King List A [http://oracc.museum.upenn.edu/ribo/kinglists/kinglista/index.html]. Although he reportedly ruled for as long as twelve years, no further sources for his reign are attested, and it can therefore not be established if he was related to his predecessor Marduk-aḫḫē-erība [http://oracc.museum.upenn.edu/ribo/babylon2/rulers/mardukahheeriba/index.html] and/or his successor Nabû-šumu-libūr [http://oracc.museum.upenn.edu/ribo/babylon2/rulers/nabushumulibur/index.html].
Brinkman, J.A., A Political History of Post-Kassite Babylonia. 1158-722 B.C. (Analecta Orientalia 43), Roma: Pontificium Institutum Biblicum, 1968 (esp. pp. 44-45, 146-147 and 339 no. 10).
Frame, G., Rulers of Babylonia. From the Second Dynasty of Isin to the End of Assyrian Domination (1157-612 BC) (The Royal Inscriptions of Mesopotamia, Babylonian Periods 2), Toronto et al.: University of Toronto Press, 1995 (esp. pp. 65).
Alexa Bartelmus
Alexa Bartelmus, 'Marduk-zēr?-[...] (1045-1034 BC)', RIBo, Babylon 2: The Inscriptions of the Second Dynasty of Isin, The RIBo Project, a sub-project of MOCCI, 2016 [http://oracc.museum.upenn.edu/ribo/babylon2/rulers/mardukzer/]