Claudius Casilon the Grammarian (Κλαύδιος Κασιλών ὁ γραμματικός) was a Roman-period scholar of language. His Roman gentilicium Claudius indicates citizenship, and his epithet identifies his profession. Grammarians in the 1st–3rd centuries CE were typically engaged in teaching, textual criticism, and composing technical treatises within the enduring Greek intellectual tradition under Roman rule [1].

He is attested only by a single citation in the Homeric scholia, which references his work “ἐν τῷ περὶ τῆς Ἰλιάδος διαλέκτου” (“in his work On the Dialect of the Iliad”) [2]. This treatise, now lost, analyzed the linguistic dialect of Homer’s epic.

Casilon exemplifies the numerous minor grammatical figures from antiquity known only through fragments. His significance lies as a datum in the history of Homeric scholarship, placing him within the long tradition of Alexandrian and later grammarians who systematically studied Homeric language. His citation in the scholia shows his analysis contributed to later scholarly discourse on the Homeric poems.

Sources 1. Encyclopædia Britannica: Grammar (Ancient World): https://www.britannica.com/topic/grammar 2. Perseus Digital Library: Scholia on Homer's Iliad 23.885: https://www.perseus.tufts.edu/hopper/text?doc=Perseus%3Atext%3A1999.04.0057%3Aentry%3D*klau%2Fdios