Plutarch Crassus 8

[1] The insurrection of the gladiators and their devastation of Italy, which is generally called the war of Spartacus, ¹ had its origin as follows. A certain Lentulus Batiatus had a school of gladiators at Capua, most of whom were Gauls and Thracians. Through no misconduct of theirs, but owing to the injustice of their owner, they were kept in close confinement and reserved for gladiatorial combats.

[2] Two hundred of these planned to make their escape, and when information was laid against them, those who got wind of it and succeeded in getting away, seventy-eight in number, seized cleavers and spits from some kitchen and sallied out. On the road they fell in with waggons conveying gladiators’ weapons to another city; these they plundered and armed themselves. Then they took up a strong position and elected three leaders. The first of these was Spartacus, a Thracian of Nomadic stock, possessed not only of great courage and strength, but also in sagacity and culture superior to his fortune, and more Hellenic than Thracian.

[3] It is said that when he was first brought to Rome to be sold, a serpent was seen coiled about his face as he slept, and his wife, who was of the same tribe as Spartacus, a prophetess, and subject to visitations of the Dionysiac frenzy, declared it the sign of a great and formidable power which would attend him to a fortunate issue. This woman shared in his escape and was then living with him.