E. Cobham Brewer 18101897. Dictionary of Phrase and Fable. 1898.
Sub Jove (Latin).
Under Jove; in the open air. Jupiter is the deified personification of the upper regions of the air, Juno of the lower regions, Neptune of the waters of the sea, Vesta of the earth, Ceres of the surface soil, Hades of the invisible or under-world.