He belonged to the circle of deities related to the moon god, Nanna, and sometimes could be viewed as his son.
He is also well attested as the brother of Alammuš, and they frequently appear together in god lists, incantations and especially in astronomical texts.
[2] The great god list An = Anum does not label him as Nanna's son, though the existence of such a tradition is confirmed by other sources.
[3] Early assyriologist Ernst Weidner incorrectly assumed that Ningublaga was a female deity and the wife of Alammuš, which has been disproved by subsequent studies.
[13] Multiple pairs of deities referred to as the "daughters" of a specific temple are known, many of them from northern Mesopotamia.
[15] Based on the fact that the goddesses associated with Esagil and Ezida are well attested as members of courts of Zarpanit and Nanaya respectively, specifically as their hairdressers, Andrew R. George concluded that the remaining pairs also were regarded as maidservants in the household of the respective major deity or deities.
[14] In one text, the god Lumma is most likely described as a subordinate of Ningublaga, though a less likely restoration instead places Dumuzi in the role of his superior instead.
[16] Jeremiah Peterson proposes that Numushda was perceived as similar to Ningublaga and for this reason the former also came to be sometimes viewed as a son of Nanna, though he notes no direct equivalence between these two deities is attested in any known god lists.
[1] His temples there were the Egudušar, "house of multiple perfect oxen,"[18] and the Gaburra, "chamber of jars," originally founded by Ur-Nammu.
[26] An inscription on a kudurru (boundary stone) from the reign of Marduk-apla-iddina I (the "land grant to Munnabittu kudurru") mentions Ningublaga alongside a large number of other deities, including Nergal, Laṣ, Bēl-ṣarbi, the pair Lugal-irra and Meslamta-ea, Šubula, Ishum, Mammitum, Ištaran and Tishpak.