Today from the J Paul Getty Museum, the head of Julia Titi, daughter of the Emperor Titus and, so Domitian-baiters would have it, her uncle's mistress. She died in AD91.
Cassius Dio writes: "Domitian planned to put his wife, Domitia, to death on the ground of adultery, but having been dissuaded by Ursus, he divorced her, after murdering Paris, the actor, in the middle of the street because of her. And when many persons paid honour to that spot with flowers and ointments, he ordered that they, too, should be slain. After this he lived with his own niece (Julia, that is to say) as husband with wife, making little effort at concealment. Then upon the demands of the people he became reconciled with Domitia, but continued his relations with Julia none the less" (Cassius Dio, 67.3).
After Domitian's murder, Suetonius reports that the two were buried together: "Domitian was slain on the fourteenth day before the Kalends of October in the forty-fifth year of his age and the fifteenth of his reign. His corpse was carried out on a common bier by those who bury the poor, and his nurse Phyllis cremated it at her suburban estate on the Via Latina; but his ashes she secretly carried to the temple of the Flavian family and mingled them with those of Julia, daughter of Titus, whom she had also reared" (Suetonius, Domitian, 17.3).