The Ardiaean kingdom was transformed into a formidable power--both by land and sea--under the leadership of Agron. During this time, Agron invaded part of Epirus, Corcyra, Epidamnos and Pharos in succession, establishing garrisons in them. The Ardiaean realm became one of Rome's major enemies, and the primary threat in the Adriatic Sea. A series of wars were fought between the Roman Republic and the Illyrian (Ardiaean-Labaeatan) kingdom in the 3rd-2nd centuries BC. Polybius (203 BC-120 BC) writes that they were subdued by the Romans at events that occurred at 229 BC. The Epitome of Livy reports that Roman consul Fulvius Flaccus put down an uprising in 135 BC undertaken by Ardiaei and Pleraei in Roman Illyria.
In earlier times the Ardiaei were enemies of the Autariatae for a long period over salt source.Appian (95-165) writes that the Ardiaei were destroyed by the Autariatae and that in contrast to the Autariatae they had maritime power.
S o u t h e r n I l l y r i a i n t h e 3rd - 2nd c e n t u r i e s B C E
Accounts in ancient sources create much confusion about the original location of the Ardiaei. Up to the 4th century BC the Ardiaei were not a coastal people as they were described by later Roman historiography from the mid-3rd century BC and onwards. Their inland location in older times can be inferred by the cause of war between them and the Autariatae - a long-running conflict over the possession of salt sources near their common border. If they had lived in the Adriatic coastal area, they would not have had such a pronounced need to undertake a dangerous war because of the mountain salt springs.
The arrival of the Ardiaei on the coast must have occurred at some time after the mid-4th century BC, as the Periplus of Pseudo-Skylax dating back to that time does not mention this Illyrian tribe at all. In that time the lower course of the Naro river was inhabited by the Manioi, while the middle course was likely inhabited by the Ardiaei. The territory of the Ardiaei and Autariatae must have met somewhere along the upper Naro valley, near the 'Great Lake', which was attested in the Periplus and has been identified with Hutovo Blato. The Autariatae most likely inhabited the other side of the lake. During the 2nd century BC the Manioi disappeared from historical sources, being replaced in some of their former regions by the Ardiaei and Daorsi, while some of the earlier Autariatan territories were inhabited by the Narensii. Their tribal name indicates that Narensii certainly inhabited some of the areas along the Naron river, and that they probably appeared in historical sources after the disintegration of the coalition that was dominated by the Autariatae.
In the 3rd century BC, the Ardiaei took on political importance and conquered territories from the Autariatae until they acquired control of the entire Adriatic coast from the region of the Daorsi at the mouth of the Naro river down to that of the Labeatae around Lake Scodra. It is possible that at that time their capital was in Rhizon in present-day Montenegro. In Roman times the Ardiaei were attested in the area of southern Illyria that was centered around the Bay of Kotor, with Rhizon as a capital city, expanding from the Naro river in present-day Bosnia and Herzegovina and Croatia, along the Adriatic coast southwards to Scodra (another capital of the Illyrian kingdom) in present-day Albania, as well as to the broad region of Lissus.
Approximate extension of the Illyrian (Ardiaean) realm under King Agron's rule in the 3rd century BC.
Due to widespread piracy perpetrated in the Adriatic by the Ardiaei and other Illyrian tribes, the Romans campaigned against them in the events of the Illyrian Wars. They were viewed as heavy drinkers in comparison, by the Greeks.
In earlier times the Ardiaei were enemies of the Autariatae for a long period over salt source.
The Ardiaei had briefly attained military might, during 230 B.C. under the reign of king Agron (an Ardiaean by tribal origin). His widow, Queen Teuta attempted to gain a foothold in the Adriatic but failed due to Roman intervention. Historic accounts hold that King Agron was hired by king Demetrius of Macedonia repel the invasion of Macedonia by the invading Aetolians. The Ardiaei had 20 decuriae.
The ancient geographer, Strabo, lists the Ardiaei as one of the three strongest Illyrian peoples - the other two being the Autariatae and the Dardani. Strabo writes;
"Because they pestered the sea through their piratical bands, the Romans pushed them back from it into the interior and forced them to till the soil. But the country is rough and poor and not suited to a farming population, and therefore the tribe has been utterly ruined and in fact has almost been obliterated. And this is what befell the rest of the peoples in that part of the world; for those who were most powerful in earlier times were utterly humbled or were obliterated, as, for example, among the Galatae the Boii and the Scordistae, and among the Illyrians the Autariatae, Ardiaei, and Dardanii, and among the Thracians the Triballi; that is, they were reduced in warfare by one another at first and then later by the Macedonians and the Romans."
King Agron, son of Pleuratus who belonged to the ruling house of the Ardiaei, disposed of the most powerful force, both by land and sea, of any of the kings which had reigned in Illyria before him.
The following list reports the members of the Ardiaean dynasty documented as such in ancient sources:
^ abWilkes 1992, pp. 156-157: "Agron, son of Pleuratus belonged to the ruling house of the Ardiaei. 'Agron was king of that part of Illyrian which borders Adriatic sea, over which Pyrrhus and his successors had held sway. In turn he captured part of Epirus and also Corcyra, Epidamnus and Pharos in succession, and established garrisons in them'(Appian Illyrike 7). The new power disposed of the most powerful force, both by land and sea, of any of the kings who had reigned in Illyria before him', we are informed by Polybius (2.2)"
^Plb. 2.11, "The Romans, taking the Epidamnians under their protection, advanced into the interior of Illyricum, subduing the Ardiaei as they went."
^ abWilkes 1992, p. 139: "... describes a long-running feud between the Autariatae and the Ardiaei over the possession of a salt-source near their common border ..." p. 223: "The salt source that was a cause of conflict between the Illyrian Ardiaei and Autariatae may be that at Orahovica in the upper Neretva valley near Konjic."
^App. Ill. 1, "In like manner the Ardiæi, who were distinguished for their maritime power, were finally destroyed by the Autarienses, whose land forces were stronger, but whom they had often defeated."
^Wilkes 1992, p. 216: "The Ardiaei, or Vardaei as they were known to the Romans, 'once the ravagers of Italy' and now reduced to a mere."
^Elsie 2015, p. 2: "Their name may be related to the heron (Lat. ardea) as a totem symbol."
^Wilkes 1992, p. 221: "To the Greek world the Illyrians appeared heavy drinkers, from the drinking bouts of the Ardiaei from which intoxicated men were conveyed home by their women, who had also participated, to the overindulgence of their kings ..."
^The Cambridge Ancient History, Volume 7, Part 1, by Frank William Walbank, 1984, ISBN0-521-23445-X, page 452
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Ferone, Claudio (2004). "Appiano, "Illyr." 3 e la pirateria illirica nel IV sec.A.C." [Appian, "Illyr." 3 and the Illyrian piracy in the 4th century BC]. Hermes (in Italian). Franz Steiner Verlag. 132 (3): 326-337. JSTOR4477612.