Domitian Caesar.

Twelfth of the Caesars.

Period of principate.
81 to 96.

Related and attributed text(s).
Suetonius, Domitian (related), available in Latin and English (LacusCurtius).
Cassius Dio, Roman History (related), available in English (LacusCurtius).

Useful links.
Domitian at Wikipedia.
Domitian at Roman Emperors.

Domitian Caesar was the twelfth of the twelve Caesars for whom Suetonius wrote a biography.