In Sumerian mythology, Ninhursag (NIN.URSAG) was the earth an mother-goddess, one of the seven great deities of Sumer. She is principally a fertility goddess. Temple hymn sources identify her as the 'true and great lady of heaven' and kings of Sumer were 'nourished by Ninhursag's milk'. She is typically depicted wearing a horned head-dress and tiered skirt, often with bow cases at her shoulders, and not infrequently carries a mace or baton surmounted by an omega motif or a derivation, sometimes accompanied by a lion cub on a leash. She is the tutelary deity to several Sumerian rulers.