the status of Rome clients, as was certainly the case with the Parthini in the Gensus (Shkumbin) valley and the Atintani further south. Moreover, not only were the Ardiaei prevented from moving at will by land and sea into Epirus and western Greece, but they were now cut off from the inland route to Macedonia, their patron and ally against the Greek Leagues. Second Illyrian War Revival of power The decade after 229 BC witnessed a revival of Illyrian power under Demetrius, who succeeded Teuta. Following the war, Demetrius married Triteuta, Agron's first wife and mother of Pinnes, in or around 222 BC, which consolidated his position. His marriage to Triteuta meant that Demetrius formally took over the regency of the Ardiaean Kingdom. Demetrius' own influence was thereby greatly extended, and the fundamental weakness of the Ardiaean Kingdom after 229 BC, that there was no competent regent for Pinnes, was relieved. The king began to renew traditional Illyrian ties with Macedonia. In 222 BC, an Illyrian corps of 1,600 men fought with distinction under the command of Demetrius at Sellasia, where the Macedonians won a conclusive victory over the Spartans. After Sellasia, Demetrius began attempting to extend his control over Illyria at the expense of Rome. Before then, when Rome was preoccupied with a war against the Celtic peoples of the Po Valley in northern Italy from 225–222 BC, Demetrius detached the Illyrian Atintani from their Roman alliance. In addition, he sailed south of Lissus, Lezhë in present-day Albania, and engaged in piracy in contravention of the settlement in 228 BC. In 221 BC, Demetrius also created an alliance with the Illyrian Histri at the head of the Adriatic, which tribe was interfering with Roman supply ships. A Roman fleet soon attacked the Histri. Early in the summer of 221 BC, when tension was rising in Greece as Macedonia made an alliance with the Achaean League against the Aetolian League, the Illyrians attacked in their traditional manner. In 220 BC, Demetrius and the Illyrian commander, Scerdilaidas, sailed south of Lissus with 90 lembi. An assault on Pylos in the western Peloponnese initially failed, but Demetrius eventually captured 50 ships. Afterwards, the Illyrians separated their forces; Demetrius and his forces plundered the Cyclades, while Scerdilaidas' forces returned north to Illyria. On putting in at Naupactus with forty ships, Scerdilaidas was encouraged by his brother-in-law Amynas, king of the Athamanes, to join