Vespasian Caesar.

Tenth of the Caesars.

Period of principate.
69 to 79.

Related and attributed text(s).
Tacitus, Histories 4-5 (related), available in Latin (Latin Library) and English (Internet Classics Library).
Suetonius, Divine Vespasian (related), available in Latin and English (LacusCurtius).
Cassius Dio, Roman History (related), available in English (LacusCurtius).

Useful links.
Vespasian at Wikipedia.
Vespasian at Roman Emperors.

Vespasian Caesar was the tenth of the twelve Caesars for whom Suetonius wrote a biography. He was the fourth of the emperors in 69, the notorious year of the four emperors.