Minor Source Seneca, On Firmness of Purpose: After 41 CE, most likely 55-9 – a didactic treatis
By contrast the military tribune, Chaerea had a limp manner of speech, which belied his outstanding military record; his voice was quiet and, if you did not know his record, you might have had your doubts about him. When on duty he had to ask Gaius for the password, to which Gaius (himself dressed in see-through dress, sandals, and gold accessories) would give him “Venus” or “Priapus”, as if seeking to suggest in one way or another that this military hero was a lecherous effeminate. Rather than having to go on asking for the password in this way, Chaerea was driven by him to employ cold steel. He was the first of the conspirators to strike, with one blow cutting off the emperor’s head. After that, from every side sword thrusts rained in upon him from men seeking vengeance for past insults, public and private. But the first to strike had been the man who seemed least likely of all to do it.