Introduction
Lahmu is, with his twin Lahamu, one of the first pair of gods born from the union of Apsu and Tiamat in the Enuma Elish, personifying the silt carried by Mesopotamia's rivers.
Family
First of a New Generation
Lahmu and Lahamu's union produced Anshar and Kishar, continuing the genealogical chain that would eventually lead to Anu, Enlil, Ea, and the rest of the great gods. Beyond this genealogical role, Lahmu also had independent ritual significance as a protective guardian figure, represented in temple architecture and foundation deposits meant to ward off evil.
Mesopotamian religion spans Sumerian, Akkadian, and Babylonian sources composed and recopied across nearly three thousand years, so names, genealogies, and even a deity's role often shift between traditions (Sumerian An/Enki/Inanna alongside their Akkadian/Babylonian forms Anu/Ea/Ishtar); the account above follows the most widely attested version, usually as consolidated in the Babylonian Enuma Elish or the standard Akkadian Epic of Gilgamesh.