

The Western Roman Empire was the western half of the Roman Empire, which was divided by Diocletian in 286 AD. ^ The de jure last emperor, Julius Nepos, reigned for five years in exile from Spalatum in Dalamatia.Both Emperors Petronius Maximus and Anthemius reigned from and died in Rome. In the period between Valentinian and Glycerius, who once again reigned from northern Italy, most emperors appear to have reigned from Rome.

^ The Theodosian dynasty Emperors Honorius and Valentinian III reigned from Ravenna.Another suggested end date is the reorganisation of the Italian Peninsula and the abolition of separate Western Roman administrative institutions under Emperor Justinian during the latter half of the 6th century. ^ The deposition of Emperor Romulus Augustulus in 476 is the most commonly-cited end for the Western Roman Empire, but the last Western Roman Emperor, Julius Nepos, was assassinated in 480, when the title and notion of a separate Western Roman Empire were abolished.In the ancient era, the Latin term that was often used was "S.P.Q.R." ("Senatus Populusque Romanus" Latin) in documents, on flags and banners and carved/engraved on buildings Terms such as Imperium Romanum Occidentalis and Hesperium Imperium were never in official usage or were invented by later medieval or modern historians long after the Western Roman court had fallen. ^ Since the Western Roman Empire was not a distinct state separate from the Eastern Roman Empire, there was no particular official term that designated the Western provinces or their government, which was simply known at the time as the "Roman Empire".
