Julio-Claudian dynasty reign as being strongly influenced by his mother Agrippina, his tutor Seneca, and the Praetorian Prefect Burrus, especially in the first year. He was made Emperor over his step-brother, Claudius' son Britannicus, who he had killed. Agrippina was believed to have poisoned Claudius, having allegedly poisoned her second husband Gaius Sallustius Crispus Passienus. She had also arranged the deaths of Caligula's third wife, Lollia Paulina and Messalina's mother Domitia Lepida the Younger. She saw that the dynasty's numbers dwindle with the execution of Marcus Junius Silanus Torquatus, a grandson of Julia the Younger, to strengthen Nero's claim, having previously arranged
Vipsania Agrippina Vipsania Agrippina Vipsania Agrippina (; 36 BC – 20 AD) was the first wife of the Emperor Tiberius. She was the daughter of Marcus Vipsanius Agrippa and Pomponia Caecilia Attica, granddaughter of Titus Pomponius Atticus. By marriage, she was a great-niece to Quintus Tullius Cicero. She was betrothed by Augustus and her father to Tiberius, the stepson of Augustus, before her first birthday. They were married around 19 BC. Their son Drusus Julius Caesar was born in 14 BC. Her father died in March 12 BC while married to his third wife Julia the Elder, the daughter of Augustus. Augustus