Roman Emperor Commodus Assassinated
By late 192, Commodus had alienated senators and senior members of his own household through executions, erratic rule, and his public identification with Hercules and the arena. A court conspiracy formed around his chamberlain Eclectus, his mistress Marcia, and the praetorian prefect Laetus after members of the household reportedly learned that they faced death. On December 31, an attempt to poison Commodus failed, after which the wrestler Narcissus strangled him in his bath. Officials concealed the death long enough to arrange the accession of Pertinax. The killing ended Commodus's reign and the line of emperors associated with the Antonine dynasty.
Why it matters: Commodus's assassination opened the political crisis of 193, when rapid successions and rival military claimants demonstrated how strongly imperial power depended on armed support. The ensuing civil wars ultimately brought Septimius Severus to power and reshaped the relationship among the emperor, Senate, Praetorian Guard, and provincial armies.