Isaeus

Isaeus (Latin; Greek Ἰσαῖος Isaios), fl. early 4th century BC. One of the ten Attic Orators according to the Alexandrian canon. He was a student of Isocrates in Athens, and later taught Demosthenes while working as a metic speechwriter for others. Only eleven of his speeches survive, with fragments of a twelfth. They are mostly concerned with inheritance, with one on civil rights. Dionysius of Halicarnassus compared his style to Lysias, although Isaeus was more given to employing sophistry.

Read more about Isaeus:  Life, Works, Oratorical Style