Titus Caesar.

Eleventh of the Caesars.

Period of principate.
79 to 81.

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

Useful links.
Titus at Wikipedia.
Titus at Roman Emperors.

Titus Caesar was the eleventh of the twelve Caesars for whom Suetonius wrote a biography.