(Σαλύνθιος), a king of the Agraeans, gave a hospitable reception to the Peloponnesians, who, after the battle of Olpae (B. C. 426), had abandoned their Ambraciot allies and secured their own safety by a secret agreement with Demosthenes, the Athenian general. In B. C. 424, Demosthenes invaded the territory of Salynthius, and reduced him to subjection. (Thuc. 3.111, 4.77.)
[E.E]A Dictionary of Greek and Roman biography and mythology
Smith, William
A Dictionary of Greek and Roman biography and mythology. William Smith, LLD, ed. 1890