, or Cornelia Orestilla
was the second wife of the Roman Emperor Caligula
. She was originally married to Gaius Calpurnius Piso
, who was persuaded or forced to annul the marriage so that Caligula could marry her. According to both Dio
, this occurred during the wedding celebrations. Suetonius claims that Caligula issued a proclamation the next day that he had acquired a new wife in the tradition of Romulus
, who had both stolen wives from other men. Days later he divorced her and two years later banished her on suspicion of returning to her other husband.