Apollonius
From LSJ
γραμματική ἐστιν ἐμπειρία τῶν παρὰ ποιηταῖς τε καὶ συγγραφεῦσιν ὡς ἐπὶ τὸ πολὺ λεγομένων → grammar is a practical knowledge of the usage of poets and writers of prose
Latin > English (Lewis & Short)
Ăpollōnĭus: ii, m., = Ἀπολλώνιος>,
I a distinguished rhetorician in Rhodes, Cic. de Or. 1, 28, 126; Suet. Caes. 4.