Entry Version: This is the English version of this article translated by Patrick Hogan. The original Italian version was written by Matteo Rossetti and published on 01/11/2018. Here is the Italian version of this entry. Grammarian: Name: Achilles [Tatius] | Ἀχιλλεὺς [Τάτιος] Identity: Pauly-Wissowa | BNP Place of Origin: ? Date: 2nd/3rd c. CE ↓ To Source List Biography: This grammarian1 is dated to ca. 2nd/3rd c. CE (this dating was proposed also by Martin 1956 , p. 132): the first testimonium about a work by Achilles on the sphaera barbarica appears in Firmicus Maternus2 ( Math. 4, 17 ,12), …