<P> After 395, the list of emperors in the East is based on the same general criteria, with the exception that the emperor only had to be in undisputed control of the Eastern part of the empire, or be the legitimate heir of the Eastern emperor . </P> <P> The situation in the West is more complex . Throughout the final years of the Western Empire (395--480) the Eastern emperor was considered the senior emperor, and a Western emperor was only legitimate if recognized as such by the Eastern emperor . Furthermore, after 455 the Western emperor ceased to be a relevant figure and there was sometimes no claimant at all . For the sake of historical completeness, all Western Emperors after 455 are included in this list, even if they were not recognized by the Eastern Empire; some of these technically illegitimate emperors are included in regnal lists, while others are not . For instance, Romulus Augustulus was technically a usurper who ruled only the Italian peninsula and was never legally recognized . However, he was traditionally considered the "last Roman Emperor" by 18th and 19th century western scholars and his overthrow by Odoacer used as the marking point between historical epochs, and as such he is usually included in regnal lists . However, modern scholarship has confirmed that Romulus Augustulus' predecessor, Julius Nepos continued to rule as emperor in the other Western holdings and as a figurehead for Odoacer's rule in Italy until Nepos' death in 480 . Since the question of what constitutes an emperor can be ambiguous, and dating the "fall of the Western Empire" arbitrary, this list includes details of both figures . </P> <Table> <Tr> <Th> Portrait </Th> <Th> Name </Th> <Th> Birth </Th> <Th> Succession </Th> <Th> Reign </Th> <Th> Time in office </Th> <Th> Death </Th> </Tr> <Tr> <Td> </Td> <Td> Augustus IMPERATOR CAESAR DIVI FILIVS AVGVSTVS </Td> <Td> September 23, 63 BC, Rome, Italia </Td> <Td> Great - nephew and adopted son of Julius Caesar; became de facto emperor as a result of the' first settlement' between himself and the Roman Senate . </Td> <Td> January 16, 27 BC--August 19, 14 AD </Td> <Td> 40 years, 7 months and 3 days </Td> <Td> August 19, 14 AD (aged 75) Natural causes </Td> </Tr> <Tr> <Td> </Td> <Td> Tiberius TIBERIVS CAESAR DIVI AVGVSTI FILIVS AVGVSTVS </Td> <Td> November 16, 42 BC, Rome </Td> <Td> Natural son of Livia Drusilla, Augustus' third wife, by a previous marriage; stepbrother and third husband of Julia the Elder, daughter of Augustus; adopted by Augustus as his son and heir . </Td> <Td> September 18, 14 AD--March 16, 37 AD </Td> <Td> 22 years, 5 months and 27 days </Td> <Td> March 16, 37 AD (aged 77) Probably natural causes, possibly assassinated by Caligula or praetorian prefect Naevius Sutorius Macro </Td> </Tr> <Tr> <Td> </Td> <Td> Caligula GAIVS IVLIVS CAESAR AVGVSTVS GERMANICVS </Td> <Td> August 31, 12 AD, Antium, Italia </Td> <Td> Great - nephew and adoptive grandson of Tiberius; natural son of Germanicus; great - grandson of Augustus . </Td> <Td> March 18, 37 AD--January 24, 41 AD </Td> <Td> 3 years, 10 months and 6 days </Td> <Td> January 24, 41 AD (aged 28) Assassinated in a conspiracy involving senators and Praetorian Guards . </Td> </Tr> <Tr> <Td> </Td> <Td> Claudius TIBERIVS CLAVDIVS CAESAR AVGVSTVS GERMANICVS </Td> <Td> August 1, 10 BC, Lugdunum, Gallia Lugdunensis </Td> <Td> Uncle of Caligula; brother of Germanicus; nephew of Tiberius; great - nephew and step - grandson of Augustus; proclaimed emperor by the Praetorian Guard . </Td> <Td> January 25 / 26, 41 AD--October 13, 54 AD </Td> <Td> 13 years, 8 months and 18 / 19 days </Td> <Td> October 13, 54 AD (aged 63) Probably poisoned by his wife Agrippina the Younger, in favour of her son Nero, possibly natural causes . </Td> </Tr> <Tr> <Td> </Td> <Td> Nero NERO CLAVDIVS CAESAR AVGVSTVS GERMANICVS </Td> <Td> December 15, 37 AD, Antium, Italia </Td> <Td> Great - nephew, stepson, son - in - law and adopted son of Claudius; nephew of Caligula; great - great - nephew of Tiberius; grandson of Germanicus; great - great - grandson of Augustus </Td> <Td> October 13, 54 AD--June 9, 68 AD </Td> <Td> 13 years, 7 months and 27 days </Td> <Td> June 9, 68 AD (aged 30) Committed suicide after being declared a public enemy by the Senate . </Td> </Tr> </Table> <Tr> <Th> Portrait </Th> <Th> Name </Th> <Th> Birth </Th> <Th> Succession </Th> <Th> Reign </Th> <Th> Time in office </Th> <Th> Death </Th> </Tr>

List and describe at least three emperors during the roman empire
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