(170 BCE — 90 BCE) A Greek grammarian who wrote the first proper Greek grammar called the Art of Grammar (Tékhnē grammatiké). Basically, a compilation of Stoic and Alexandrian grammatical theory, it proposed the key idea that there are eight parts of speech. Though this concept was derived from the study of Greek, it greatly influenced subsequent Latin (see Varro) and English grammarians.
1. He was called Thrax because his father was a Thracian.