logographer

He was a logographos; i.e., a writer of speeches for other men to deliver in their defense in court, a function that was particularly useful in the climate of accusation and counter-accusation that prevailed in Athens at the conclusion of the Peloponnesian War, between Athens and Sparta.

…employing a speech writer (logographer) to prepare a speech for such occasions. Demosthenes’ skill in his speeches against Aphobus was recognized by wealthier men in need of a logographer; he soon acquired wealthy and powerful clients willing to pay well for his services. Thus began a lifelong career that…