Nero to Tacitus, the source of conflict between Nero and his mother was Nero's affair with Poppaea Sabina. In "Histories" Tacitus writes that the affair began while Poppaea was still married to Rufrius Crispinus, but in his later work "Annals" Tacitus says Poppaea was married to Otho when the affair began. In "Annals" Tacitus writes that Agrippina opposed Nero's affair with Poppaea because of her affection for his wife Octavia. Anthony Barrett writes that Tacitus' account in "Annals" "suggests that Poppaea's challenge drove [Nero] over the brink." A number of modern historians have noted that Agrippina's death would not have offered
Poppaea Sabina imperial palace guardsman Lucius Aelius Sejanus ruined him before gaining public office. Titus Ollius was from Picenum (modern Marche and Abruzzo, Italy) and he was an unknown minor character in imperial politics. Titus Ollius died in 31. Poppaea Sabina the Elder, her mother, was a distinguished woman, whom Tacitus praises as wealthy and "the loveliest woman of her day". In 47, she committed suicide as an innocent victim of the intrigues of the Roman Empress Valeria Messalina, having been charged with having committed adultery with former consul Decimus Valerius Asiaticus. The father of Poppaea Sabina the Elder was Gaius Poppaeus