Gaius Suetonius Tranquillus, Divus Iulius  88  (ca. A.D. 98-117): Curiam, in qua occisus est, obstrui placuit Idusque Martias Parricidium nominari, ac ne umquam eo die senatus ageretur. It was voted that hall in which he was slain be walled up, that the Ides of March be called the Day of Parricide, and that a meeting of the Senate should never be called on that day. (J. Rolfe, trans.)