Triteuta

Triteuta was an Illyrian queen and the first wife of the Illyrian king Agron of the Ardiaei, with whom she had a son named Pinnes.
Sometime before his death, Agron divorced Triteuta and married Teuta. Their son, crown prince Pinnes, was placed under the guardianship of step-mother Teuta until after the First Illyrian War. It is believed that, at some point, Teuta abdicated, died, or was removed, and the regency for Pinnes was taken by Demetrius of Pharos.
According to Dio Chrysostom, Demetrius of Pharos married Triteuta and became regent for Pinnes, after the war, thus becoming the most powerful of the Illyrian rulers in the 220s BC.