Marcellus, M. Pompo'nius
a grammarian, who sometimes also pleaded causes, lived in the reign of Tiberius, and was celebrated as a rigid purist in language.
There is an anecdote respecting this Marcellus and the emperor Tiberius related in Vol. I. p. 599b. (Suet. de Illius. Gramm.
22; D. C. 57.17