About the same time Plautius Silvanus, the prætor, for unknown reasons, threw his wife Apronia out of a window. When summoned before the emperor by Lucius Apronius, his father-in-law, he replied incoherently, representing that he was in a sound sleep and consequently knew nothing, and that his wife had chosen to destroy herself. Without a moment's delay Tiberius went to the house and inspected the chamber, where were seen the marks of her struggling and of her forcible ejection. He reported this to the Senate, and as soon as judges had been appointed, Urgulania, the grandmother of Silvanus, sent her grandson a dagger. This was thought equivalent to a hint from the emperor, because of the known intimacy between Augusta and Urgulania. The accused tried the steel in vain, and then allowed his veins to be opened. Shortly afterwards Numantina, his former wife, was charged with having caused her husband's insanity by magical incantations and potions, but she was acquitted.