Reference edition:

Grammatici Latini, V. Artium Scriptores minores. Cledonius Pompeius Iulianus etc., ex recensione H. Keilii, Hildesheim 1961, 9-79 (reprografischer Nachdruck der Ausgabe, Leipzig 1868).

Cledonius is the author of a commentary - generally called the Ars - on the two Artes of Donatus.  It is transmitted by a single codex (Bernensis 380) and is mutilated at beginning and end, and elsewhere appears interpolated and lacunose. Moreover, in some cases the division between the lemmata of Donatus and the notes of the commentary are unclear. The treatise appears to have been written at the behest of an unknown person, who was presumably named in the lost opening of the work’s dedicatory epistle. Following Donatus, Cledonius maintains that grammar has eight basic elements: noun, pronoun, verb, adverb, participle, conjunction, preposition, and interjection. Cledonius’ commentary on Donatus’ Ars prima can be divided into three parts: the first is dedicated to the elements mentioned above and analysis of them; the second considers the concepts of letters and syllables; the third offers a reflection on metrical feet, accentuation, and positurae. The commentary on the Ars secunda is not remarkably different, but gives more attention to the role of nouns and verbs as the only basic elements comprising a phrase; likewise in contradistinction to the Ars prima, Cledonius here gives less space to letters, syllables, and accents in order to focus on solecisms. Unfortunately, the manuscript breaks off when it introduces this latter topic.  [S. Mollea; tr. C. L. Caterine].