Ian Worthington makes a convincing case for her Lyncestian ancestry, stating that while some dispute her ethnicity thinking her father Sirrhas may have been an Illyrian, "However, this is unlikely in light of a comment that Attalus made at the wedding of Philip in 337, intended as a slur on Alexander's legitimacy, for his mother was from Epirus.". And Ian Worthington reasons further  that "Attalus' taunt, incidentally, goes some way to determining whether Philip's mother Eurydice was Lyncestian or Illyrian. If she had been the latter, then Attalus' remark would, by implication, make Philip also "illegitimate"...Hence Philip's mother was probably Lyncestian". Others also argue on her possible Lyncestian origin, stating that "she might have been descendent from a branch of the Bacchiadae clan, originally of Corinth." Stories of Eurydice's plots against her husband and her sons are at odds with other historical evidence and may be fabricated. Recent scholars have noted the many implausibilities in Justin’s narrative and have acknowledged Eurydice's near-contemporary evidences of Aeschines towards her. Aeschines described Eurydice I as the loyal defender of her sons, whereas a Plutarch’s passage describes Eurydice as a good model in the education of children.