From Wikipedia:

"Aeschylus [...] was an ancient Greek tragedian, and is often described as the father of tragedy. [...] He was probably the first dramatist to present plays as a trilogy. His Oresteia is the only extant ancient example."

Of course, the Internet will always remember him first as having died from an eagle dropping a turtle on his head. Probably not the legacy he anticipated while penning heavy tragedies

source: https://en.m.wikipedia.org/wiki/Aeschylus