"Caligula" (Latin: Gaius Julius Caesar Augustus Germanicus;) was the popular nickname of Gaius (31 August 12 AD -- 22 January 41 AD), Roman emperor from 37 AD to 41 AD. Caligula was a member of the house of rulers conventionally known as the Julio-Claudian dynasty. Caligula's father Germanicus, the nephew and adopted son of Emperor Tiberius, was a very successful general and one of Rome's most beloved public figures. The young Gaius earned the nickname Caligula (meaning "little soldier's boot", the diminutive form of caliga, hob-nailed military boot) from his father's soldiers while accompanying him during his campaigns in Germania. When Germanicus died at Antioch in 19 AD, his wife Agrippina the Elder returned to Rome with her six children where she became entangled in an increasingly bitter feud with Tiberius. This conflict eventually led to the destruction of her family, with Caligula as the sole male survivor. Unscathed by the deadly intrigues, Caligula accepted the invitation to join the emperor on the island of Capri in 31 AD, where Tiberius himself had withdrawn five years earlier. With the death of Tiberius in 37 AD, Caligula succeeded his great uncle and adoptive grandfather. There are few surviving sources on Caligula's reign, although he is described as a noble and moderate ruler during the first six months of his rule. After this, the sources focus upon his cruelty, sadism, extravagance, and intense sexual perversity, presenting him as an insane tyrant. While the reliability of these sources has increasingly been called into question, it is known that during his brief reign, Caligula worked to increase the unconstrained personal power of the emperor (as opposed to countervailing powers within the principate). He directed much of his attention to ambitious construction projects and notoriously luxurious dwellings for himself. However, he initiated the construction of two new aqueducts in Rome: the Aqua Claudia and the Anio Novus. During his reign, the Empire annexed the Kingdom of Mauretania and made it into a province. In early 41 AD, Caligula became the first Roman emperor to be assassinated, the result of a conspiracy involving officers of the Praetorian Guard, as well as members of the Roman Senate and of the imperial court. The conspirators' attempt to use the opportunity to restore the Roman Republic was thwarted: on the same day the Praetorian Guard declared Caligula's uncle Claudius emperor in his place. Caligula was born in Antium, the third of six surviving children born to Germanicus and Germanicus' second cousin Agrippina the Elder. Gaius's brothers were Nero and Drusus. His sisters were Agrippina the Younger, Julia Drusilla, and Julia Livilla. Gaius was nephew to Claudius (the future emperor). Agrippina the Elder was the daughter of Marcus Vipsanius Agrippa and Julia the Elder. She was a granddaughter of Augustus and Scribonia As a boy of just two or three, Gaius accompanied his father, Germanicus, on campaigns in the north of Germania. The soldiers were amused that Gaius was dressed in a miniature soldier's uniform, including boots and armor. He was soon given his nickname Caligula, meaning "little (soldier's) boot" in Latin, after the small boots he wore as part of his uniform. Gaius, though, reportedly grew to dislike this nickname. Suetonius claims that Germanicus was poisoned in Syria by an agent of Tiberius, who viewed Germanicus as a political rival. After the death of his father, Caligula lived with his mother until her relations with Tiberius deteriorated. Tiberius would not allow Agrippina to remarry for fear her husband would be a rival. Agrippina and Caligula's brother, Nero, were banished in 29 AD on charges of treason. The adolescent Caligula was then sent to live first with his great-grandmother (and Tiberius's mother) Livia. Following Livia's death, he was sent to live with his grandmother Antonia. In 30 AD, his brother, Drusus Caesar, was imprisoned on charges of treason and his brother Nero died in exile from either starvation or suicide. Suetonius writes that after the banishment of his mother and brothers, Caligula and his sisters were nothing more than prisoners of Tiberius under the close watch of soldiers. In 31 AD, Caligula was remanded to the personal care of Tiberius on Capri, where he lived for six years. To the surprise of many, Caligula was spared by Tiberius. According to historians, Caligula was an excellent natural actor and, recognizing danger, hid all his resentment towards Tiberius. An observer said of Caligula, "Never was there a better servant or a worse master!"

• published: 16 Mar 2015
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