Udmurt heaven-water mother, completing the -mumy cluster (with registered sky-mother udmurt_inmumy and sun-mother udmurt_shundy_mumy, and thunder-mother udmurt_gudyri_mumy authored above). English 'Mother of Heavenly Water' leads; native Инву-мумы (Invu-mumy) in term. Distinct from the chthonic water-man udmurt_vumurt (who owns earthly rivers/lakes): Invu is the celestial water/rain. No kin asserted (see SOLITARY).