Gaius Blossius (/ˈɡaɪ.əs ˈblɒsiəs/; 2nd century BC) was, according to Plutarch, a philosopher and student of the Stoic philosopher Antipater of Tarsus, from the city of Cumae in Campania, Italy, who (along with the Greek rhetorician, Diophanes) instigated Roman tribune Tiberius Gracchus to pursue a land reform movement on behalf of the plebs.
Tiberius was accused by his political opponents of attempting to provoke a popular uprising, and have himself crowned King.
Being pressed on the point, though, Blossius eventually stated that Tiberius would only have ordered such a thing, if it were in the true interests of the Roman people.
Blossius went to the province of Asia, where he took part in Aristonicus' popular uprising against Rome, aiding in the organization of the Heliopolis state.
Saylor follows the known facts of Blossius' life, but adds a long-lasting love relationship between him and a Patrician Roman woman, which is not attested in historical sources.