Proto-Indo-European *h₁ensus / *h₁onsus (i.e. *hensus / *honsus)

Proto-Indo-European *h₁onsu-ros (i.e.*honsu-ros)

Sanskrit asu ‘life, vigor, vital force, breath’

Sanskrit asura ‘supernatural’

[The Asuras were originally primordial forces of Nature in Vedic mythology, not unlike the Titans of Greek mythology, but generally tended to be regarded as evil in later Hindu mythology in opposition to the Devas who were generally regarded as good (Nature vs. Civilization dichotomy)]

Avestan ahu ‘lord’

Avestan Ahura Mazda

[Whereas the Asuras came to be regarded as generally evil and the Devas came to be regarded as good in Hinduism, the opposite happened in Zoroastrianism (i.e. Mazdaism), with Ahura Mazda “Wise Lord” being considered the good God above all and the Daevas being considered demons.]

[By the way, I consider it likely that the name of the chief god of the Assyrians – Aššur – resulted from a borrowing of Indo-Iranian *Ansuros.]

Greek Ouranos < *Osur-anos < *Onsur-h₂enos (?)

[Ouranos is from *onsur(os) extended with the “divinising” suffix –h₂enos (a form which would account for the -a- rather than -o- : Ouranos). Ouranos is not cognate with Sanskrit Varuna < Proto-Indo-European *Werl-ṃnos > Celtic Vellaunos & Greek Hellēnes – see https://vellaunos.ca/2021/03/27/vellaunos/ for a further discussion of this name.]

Hittite ḫaššuš ‘king’

[See http://www.tundria.com/Linguistics/pie-phonology.shtml which suggests that Proto-Indo-European *h₁ may sometimes be reflected as ḫ in Hittite.]

Proto-Germanic *ansuz > Old English ōs (as in Oscar, Oswald, Osbert, Osmond) & Old Norse áss (pl æsir)

[The Aesir in Norse mythology are the gods of the Norse peoples, whereas the Vanir may either represent the primordial gods of Nature or the gods of the folk inhabiting Scandinavia before the arrival of the Proto-Germanic peoples – a dichotomy resembling the Asura/Deva and Ahura/Daeva dichotomies among the Indo-Iranians.]

Celtic Esus < Proto-Celtic *Essus < *Ensus

[The similarity of Celtic Esus to Latin Iēsūs < Greek Iēsous < Hebrew Yēšûa is most unfortunate. All efforts to connect the Celtic god Esus with the mythical Christian godman Jesus merely on the basis of the similarity of their names (which have entirely different etymological origins) are simply outrageous.]

Latin erus ‘master’ < Proto-Italic *ezus < *esus < *ensus

[Although declined as a second-declension noun, this word may originally have been a u-stem – Proto-Indo-European & Proto-Italic o-stem endings becoming -us and -um in Latin, thus causing confusion between second declensions and fourth declensions (cf. Latin domus which has both second-declension and fourth-declension forms).]

It appears that there are no reflexes of PIE *h₁ensus / *h₁onsus or *h₁onsuros in Baltic and Slavic.