Obiit tricesimo et secundo aetatis anno, die quo quondam Octaviam interemerat, tantumque gaudium publice praebuit, ut plebs pilleata tota urbe discurreret. et tamen non defuerunt qui per longum tempus vernis aestivisque floribus tumulum eius ornarent ac modo imagines praetextatas in rostris proferrent, modo edicta quasi viventis et brevi magno inimicorum malo reversuri. quin etiam Vologaesus Parthorum rex missis ad senatum legatis de instauranda societate hoc etiam magno opere oravit, ut Neronis memoria coleretur. denique cum post viginti annos adulescente me exstitisset condicionis incertae qui se Neronem esse iactaret, tam favorabile nomen eius apud Parthos fuit, ut vehementer adiutus et vix redditus sit.
(Suetonius, Nero 57)
He met his end in his thirty-second year on the anniversary of Octavia’s death, thereby provoking such great public joy that the common people ran throughout the city dressed in liberty caps. Yet there were also some who for a long time would decorate his tomb with spring and summer flowers, and would sometimes display on the rostra statues of him dressed in a toga or post his edicts as if he were still alive and would soon return to avenge himself on his enemies. Indeed, even Vologaesus, king of the Parthians, when he sent ambassadors to the senate to renew his alliance, also made an earnest appeal that the memory of Nero should be honoured. Moreover, twenty years later, when I was a young man, there was an individual of unknown origins who boasted that he was Nero, and the name was so popular with the Parthians that they gave him vigorous support and could scarcely be made to surrender him. (tr. Catharine Edwards)
Crambe Repetita 