CALIGULA kə lĭg’ yə lə. Gaius Julius Caesar Germanicus, nicknamed Caligula (Little Boots) by the soldiers of the Rhine, was born to Germanicus and Agrippina in a.d. 12. After his father’s death in 19 and his mother’s arrest in 29, he lived with the aging Tiberius. After the death of his elder brother Drusus in 33, Gaius was named co-heir with Drusus’ son, Tiberius Gemullus, who was seven years his junior. On Tiberius’ death in 37, Gaius was acclaimed emperor, thanks to the support of Macro, prefect of the praetorian troops. The Senate invalidated Tiberius’ will. In the first year of his principate Gaius was seriously ill, and on his recovery manifested those symptoms of sadistic madness and irresponsible folly for which he is chiefly remembered. He executed Macro and Tiberius Gemellus, and generally acted with petulant autocracy.