One of the tasks the emperor Vespasian has given Marcus Didius Falco for his assignment in Germania (The Iron Hand of Mars by Lindsey Davis, our next read) is to find the fugitive leader of the Batavian Rebellion, Gaius Julius Civilis. Read the mystery novel and find out what "really" happened to Civilis before he "disappears from history," as it is phrased in one of the articles below. The whole sorry story as reported in history:
Gaius Julius Civilis
Revolt of the Batavi
both Wikipedia, handle with care
The Batavian revolt at livius.org
Ancient writers:
The History by Tacitus
Cassius Dio Epitome of Book LXIV
The image at right comes from a large canvas titled The Conspiracy of Claudius Civilis, by Rembrandt, 1662 (Nationalmuseum Stockholm). It's accompanied by an excellent text.