The world’s first known author is widely considered to be Enheduanna, a woman who lived in the 23rd century BCE in ancient Mesopotamia (approximately 2285 – 2250 BCE). Enheduanna is a remarkable figure: an ancient “triple threat”, she was a princess and a priestess as well as a writer and poet.
Source: Hidden women of history: Enheduanna, princess, priestess and the world’s first known author