Caelus

Caelus or Coelus (/ˈsiːləs/; SEE-ləs) was a primordial god of the sky in Roman mythology and theology, iconography, and literature (compare caelum, the Latin word for "sky" or "the heaven", hence English "celestial"). The deity's name usually appears in masculine grammatical form when he is conceived of as a male generative force.