text:  Cassius Dio ( c . 155 – 229 ) was the son of Cassius <unk> , a Roman senator . He passed the greater part of his life in public service . He was a senator under Commodus and governor of Smyrna after the death of Septimius Severus ; and afterwards suffect consul around 205 , and also proconsul in Africa and Pannonia . 
  