- Titus Flavius Ferox
- Roman centurion of Legio II Augusta
- Britonian
- Prince of the Silures
- Vindex
- Leader of the Brigantian scouts who serve with the army.
- Member of the Carvetti clan.
- Crispinus
- Tribunus laticlavius with the Augusta
- Flavius Cerialis
- Prefect of the Ninth Cohort of Batavians
- Sulpicia Lepidina
- Wife of Cerialis
- Lady Fortunata
- Vegetus - husband of Fortunata, Imperial Friedman
- Julius Flaccus - Junior tribune of VIIII Hispana
- “Flaccus always seemed to be around when mistakes occurred and the man might be no more than a fool.”
- “A foolish man will never be lonely."
- Longinus
- 40 year veteran cavalryman.
- aka Julius Civilis, former prefect, former equestrian, and former leader of the Batavian revolt.
- The Stallion - Priest
- The Beggar aka Acco
- Druid who taught Ferrox as a child
- Tincommius
- High King of the Vacomagi and Venicones, Overlord of the Caledonians.
- Gannascus
- German warrior under Tincommius.
- Gannallius
- Trinovantian
- Soldier of the First Cohort of Tungrians
- Missing from the massacre at the tower
- Lucius Neratius Marcellus
- Legatus Augusti, Vir illustris and former consul.
- Uncle of Crispinus
- Quintus Ovidius
- Advison to Marcellus
Omnes ad stercus - we're all in the shit or it’s all gone to shit
AD 43
- Emperor Claudius orders the invasion of Britain. Participating is the Legio II Augusta under the command of future emperor Vespasian.
AD 96 Sep. 18
- Emperor Domitian is assasinated by members of his staff, ending the Flavia dynasty.
- Nerva (Marcus Cocceius Nerva Caesar Augustus) becomes Emperor of Rome, starting the Nerva–Antonine dynasty.
AD 97 October
- The Praetorian Guard, lead by Praetorian Prefect Casperius Aelianus lays siege to the Imperial Palace and takes Emperor Nerva hostage, forcing him to hand over to them those responsible for the assasination of Emperor Domitian.
- In order to solidify his position with the army and the people, Emperor Nerva appoints Trajan as his heir.
AD 98 - Time of the novel
AD 98 January 27
- Emperor Nerva dies of natural causes.
- Trajan (Caesar Nerva Trajanus Augustus) becomes emperor of Rome, and begins a lengthy inspection on the Rhine and Danube frontiers, solidifying his control of the army. Summoning Casperius Aelianus to him, Trajan has him put "out of the way".
AD 99
- Trajan goes to Rome
- Carvetti
- Selgovae
- Textoverdi
- Trinovantian