Question: Which Greek Stoic philosopher mentioned two of the four subgroups of the Helvetians that failed in their migration attempt to Gaul?
Sentence (from "Sandon (philosopher)"): He has been identified with the Sandon of Tarsus mentioned by Pseudo-Lucian in the essay "Macrobii" ("Long Lives"), who was the father of Athenodorus (the Stoic philosopher and the tutor of Augustus Caesar).
Relevant evidence: No