The name Julious has its origins in ancient Rome, derived from the Latin gens or family name "Julius". This name was borne by the famous Roman dictator Julius Caesar, whose birthname was Gaius Julius Caesar. The name Julius is believed to have its roots in the Latin word "ioulos", meaning "downy-bearded".

One of the earliest recorded uses of the name Julious dates back to the 1st century AD, when it was mentioned in the writings of the Roman historian Suetonius. In his work "De Vita Caesarum" (The Lives of the Caesars), Suetonius refers to a Roman nobleman named Julious Celsus.

In the 3rd century AD, Julious Africanus, a Christian historian and writer, is known for his work "Chronographiai", a universal history of the world from the creation to his own time. He was born in around 160 AD in Jerusalem.

During the Middle Ages, Julious Firmicus Maternus, a Roman astrologer and writer, is remembered for his work "Mathesis", a treatise on astrology written in the 4th century AD. He was born in Sicily in around 335 AD.

In the 6th century, Julious Honorius, a Roman grammarian and writer, is known for his work "De Cosmographia", a geographical treatise that describes the world as it was known at the time. He lived in Constantinople during the reign of the Byzantine Emperor Justinian I.

Another notable figure with the name Julious was Julious Paulus, a Roman jurist who lived in the 3rd century AD. He served as a legal advisor to several Roman emperors and is known for his contributions to Roman law, particularly in the compilation of the Digest, a part of the Corpus Juris Civilis.