Jovian as an adjective (from LatinJovis) means "related or pertaining to Jupiter" — either the planet or the Roman god.
Jovian (c. 332 - February 17, 364) was also a soldier elected Roman Emperor by the army on June 26, 363 upon the death of Julian. The latter had been mortally wounded in battle against the Persians. As the Roman army was deep inside Persian territory, Jovian was forced to make peace on unfavourable terms, in order to lead his troops back to friendly territory.
Jovian was a Christian, in contrast to his "apostate" predecessor Julian, who had attempted a revival of paganism. He died on February 17, 364 after a reign of 8 months.
Jovian was born at Singidunum in 330s, the son of the commander of Constantius II's imperial bodyguards.
Some accounts have it that on Julian's death Jovian's soldiers called out "Jovianus!" but the cry was mistaken for "Julianus", and the army cheered Jovian, briefly under the illusion that the slain Emperor had recovered from his wound.
Jovian was a Christian, in contrast to his predecessor Julian, who had attempted a revival of paganism.