Amantini was the name of an Pannonian Illyrian tribe.They greatly resisted the Romans

Ancient Rome

Ancient Rome was a thriving civilization that grew on the Italian Peninsula as early as the 8th century BC. Located along the Mediterranean Sea and centered on the city of Rome, it expanded to one of the largest empires in the ancient world....

 but were sold as slaves after their defeat.The Amantini were close to Sirmium

Sirmium

Sirmium was a city in ancient Roman Pannonia. Firstly mentioned in the 4th century BC and originally inhabited by the Illyrians and Celts, it was conquered by the Romans in the 1st century BC and subsequently became the capital of the Roman province of Lower Pannonia. In 294 AD, Sirmium was...

 but the tribe was probably present in southern areas as well due to the existence of a city name Amantia

Amantia

Amantia or Abantia was an ancient Greek polis in Epirus. It occupied an important defensive position above the Aoos river valley to the east, and on the road to the coast and the Bay of Vlorë. A Greek temple, the Aphrodite temple, a theatre, and a stadium have also been found in the city...

.This would make the south Amantini the southernmost Illyrian tribe.