A childhood in the legions
Gaius was the son of the popular general Germanicus and Agrippina the Elder, a granddaughter of Augustus — a pedigree that fused both branches of the imperial family. As a small child he accompanied his parents on campaign along the Rhine, where soldiers dressed him in a miniature uniform and hobnailed military boots, caligae, giving him the nickname Caligula, “little boot”, that outlived his own preference for the name Gaius. His father’s death in 19 CE and his mother’s and elder brothers’ destruction under Tiberius left him, by his late teens, one of the last adults of Germanicus’s line still alive.
An acclaimed accession
Tiberius named Gaius joint heir alongside his own grandson Tiberius Gemellus, but on Tiberius’s death in 37 CE the praetorian prefect Macro engineered the Senate’s recognition of Gaius alone. Rome greeted the son of the beloved Germanicus with genuine relief and celebration; his early acts — recalling exiles, cancelling treason trials, staging lavish games — traded on that popularity.
Conflict and assassination
A severe illness late in 37 CE is often linked, without firm proof, to a harsher turn in his rule: mounting demands for exceptional personal honours, conflict with the Senate, and financial extravagance defined the hostile tradition that followed him. In January 41 CE, officers of his own praetorian guard, led by Cassius Chaerea, assassinated him after less than four years in power. His uncle Claudius succeeded him.
Historical sources
Suetonius, Caligula 9; 22–26; 56–59
The nickname, imperial claims, and assassination. The temporary bridge at Baiae is discussed in chapter 19.
The Metropolitan Museum of Art, The Julio-Claudian Dynasty
Context for Caligula’s reign and imperial image.
Portrait: The Metropolitan Museum of Art, CC0. Resized for display.