[1] The Monti Trebulani, a small mountain group in the modern province of Caserta, take their name from it.

The first mention of the name occurs in 303 BCE, when we are told that the Trebulani received the Roman franchise at the same time with the Arpinates.

[4] The Trebulanus ager is mentioned also by Cicero among the fertile districts of Campania, which Servilius Rullus proposed to distribute among the poorer Roman citizens;[5] and Pliny writes that it was noted for its wines, which had rapidly risen in estimation in his day.

It appears to have received a fresh body of settlers under Augustus, but without attaining the rank of a colony.

[7] The site of Trebula, which was erroneously fixed by Cluverius and some local writers to the south of the Vulturnus, appears to be correctly identified by local antiquarians with a place called Treglia or Tregghia, at the foot of the Pizzo San Salvatore, about 10 km north of the Vulturnus and 13 km northeast of Capua.