Who is credited with inventing tragedy?
Correct answer: Thespis

That Cøunt, Ray Bumpkin
... and is presumably the etymology of the word thespian to describe an actor, yes?

I am not a number.
Thespis is described as "The Inventor of Tragedy" but Aeschylus is described as the "Father of Tragedy".

Miss Sue
Yana, Are you sure about that?

Yana
Tragedy itself wasn't invented by a human.