Akhenaten was born with the name of Amenhotep IV. He changed his name to Akhenaten to reflect his ideology to the believe in the Sun God Disk (Aten).
The sun disk was an Extraterrestrial Spaceship that transported our Elder Brothers (extraterrestrials) who met Akhenaten and explained the existence of one Supreme God.
After that Akhenaten changed his name as well as the religion on all of Egypt to a monotheistic one to replace the multitude of gods being idolized. His reign is known as the Amarna Period because he moved the capital of Egypt from the traditional site at Thebes to the city he founded, Akhetaten, which came to be known as Amarna (also Tell el-Amarna).
He was married to Nefertiti, served as king for 17 years (1353-1336 or 1351-1334 BC) and when he died, Egypt returned to idolized multiple gods.
Links:
https://en.m.wikipedia.org/wiki/Akhenaten
Jean-Pierre Dalbéra from Paris, France. Cairo Museum. Public Domain