Latest / Nero: Mad Tyrant or Misunderstood Emperor? — Fexingo History / Nero's Assassination of Britannicus: The Poisoned Prince
Transcript
- Lucas: So we have touched on the Great Fire, the Pisonian Conspiracy, the murder of Agrippina — but one of Nero's earliest and most cold-blooded acts came right at the beginning of his reign, in 55 AD, when he was still only seventeen. Luna: You mean Britannicus. Lucas: Exactly. Britannicus — full name Tiberius Claudius Caesar Britannicus — was the biological son of the emperor Claudius. He was maybe a year younger than Nero, and he was the rightful heir. Nero, of course, had been adopted by Claudius only a few years earlier, pushed forward by his mother Agrippina. Lucas: So when Claudius died suddenly in 54 AD — probably poisoned by Agrippina herself — Nero became emperor. But Britannicus was still there, a living reminder that Nero's claim to the throne was fragile. Luna: How much of a threat was he actually? Lucas: That's the key question. Tacitus says Britannicus was a quiet, reserved boy, not particularly ambitious. But he was the son of Claudius, and that made him a focal point for anyone who wanted to challenge Nero. The historian Suetonius mentions that Nero felt threatened by Britannicus's growing popularity, especially after Britannicus started to emerge from his childhood seclusion. Lucas: And there's a famous incident: during the Saturnalia festival in December of 54, just a few months after Nero's accession, the young nobles played a game where they drew lots for who would be 'king'. Britannicus drew the lot, and he gave a series of mock commands — including one that ordered Nero to step forward and tell his secrets. Nero evidently didn't find it funny. Luna: That sounds like a power play in the making. Lucas: It was. By early 55, Nero had decided to act. The method? Poison. And he turned to a specialist: a woman named Locusta, who had already gained infamy as a poisoner under Claudius. She had supposedly supplied the poison that killed Claudius himself. Nero summoned her, and she prepared a fast-acting toxin. Lucas: The assassination happened at a dinner party in the imperial palace — the Domus Tiberiana on the Palatine Hill. Britannicus was dining with Nero and a group of friends. As was the custom, the food and drink were tasted by a servant in advance. But here's the trick: a harmless, hot drink was given to Britannicus first, tasted, and then set aside. When he asked for a cooler drink, it was brought in a cup that had already been laced with poison. Luna: So the taster had already cleared the first one? Lucas: Right. The taster never touched the second cup. Britannicus drank it and immediately collapsed. Tacitus writes that he fell forward, seized by convulsions. Nero calmly remarked that Britannicus was subject to epileptic fits, and ordered the dinner to continue as if nothing had happened. The body was rushed away and cremated that same night in the Campus Martius, with a quick, unceremonious funeral. Lucas: The next day, Nero issued a statement: Britannicus had died of an epileptic seizure. He even restored the boy's property and granted him a public funeral — but the speed of the cremation and the lack of an autopsy made everyone suspicious. Luna: Did anyone call him out publicly? Lucas: Not really. The Senate and the people were terrified. And Nero's key advisors — Seneca and Burrus — seem to have gone along with it. They had staked their careers on Nero's rule, and removing Britannicus, however brutal, stabilized the succession. Cassius Dio says that Seneca even wrote a speech for Nero to deliver, justifying the death. Luna: That's a dark turn for the philosopher. Lucas: It's one of the great ironies of Nero's reign. Seneca preached clemency and moderation, but he was complicit in a cold-blooded murder. That said, he may have felt he had no choice: if Britannicus ever became emperor, Seneca and Burrus would have been out of power, possibly executed. So it was a pragmatic, if ruthless, decision. Lucas: For the record, the poison was likely aconite, also known as monkshood or wolfsbane. It's a plant-based toxin that causes cardiac arrest and convulsions — matches the symptoms described. Locusta was later rewarded by Nero with a large estate and even students to teach her craft. Luna: So she essentially became the imperial poisoner-in-chief. Lucas: Exactly. And Nero kept her on retainer. She would resurface years later during the Pisonian Conspiracy in 65 AD, when Nero needed more poison for other enemies. But that's a story for another episode. Lucas: You know, episodes like this one — where we dig into a single, brutal event — are exactly the kind of thing that makes this show possible. And they're possible because of listeners who support it directly. If you've been getting something out of these conversations, a couple of dollars a month on buy me a coffee dot com slash fexingo genuinely keeps them going. No ads, no sponsors — just people who care about history. Thanks for being part of that. Luna: Yeah, it really does make a difference. Every little bit helps us keep digging into these stories. Lucas: So back to Britannicus: the murder had long-term consequences. It confirmed Nero's ruthlessness, and it made everyone in the court realize that no one was safe. That atmosphere of fear would eventually fuel the Pisonian Conspiracy and many other plots. Luna: Was there any public reaction? Lucas: Tacitus says the people were shocked but didn't dare to show it. The elite whispered, but no one spoke out. The only recorded dissent came from a few Stoic philosophers, who criticized the regime but were quickly silenced. Over time, Britannicus became a symbol of the lost hope of Claudius's line — a tragic figure. Lucas: One more detail: Suetonius claims that Nero later tried to use Britannicus's death to blackmail his own mother, Agrippina. He threatened to expose her as Claudius's murderer — but that's another messy story we've covered in the episode on Agrippina's death. Luna: So Britannicus's murder was essentially Nero's first real test of power. Lucas: Yes. And he passed it in the worst possible way. From then on, there was no going back. The reign that started with promises of a new golden age — the 'Neronian Golden Age' — was already stained with blood before its second year. Luna: And all of it for a throne he might have kept anyway. Lucas: Exactly. Britannicus was only fourteen when he died. He had never conspired, never raised a hand against Nero. His only crime was being born to the right father. That's the tragedy at the heart of this story.