Heliodorus was the author of the Aethiopica, the latest and longest Greek novel to survive from antiquity. In his work, Heliodorus claims to be a Phoenician from Emesa, but there are good reasons against treating this as an authoritative autobiographical statement. The Aethiopica tells the adventures of Charicleia, the white daughter of the black queen and king of Ethiopia. Her mother abandons her, and she is brought up by foster-fathers in Ethiopia and Delphi. There she falls in love with the young Greek Theagenes, with whom she travels via Egypt to Ethiopia. They are almost sacrificed to the local gods, but Charicleia’s parents eventually recognise her. The protagonists become priests and marry. The novel is a narratologically ambitious work that draws on the structure of the Odyssey (in mediis rebus beginning, embedded heterodiegetic narratives) and takes these devices to a whole new level. A wide range of topics play important roles in the Aethiopica, such as religion, multiculturalism, identity, and epistemology.
His date is not quite certain, but 4th century ce (rather than three centuries earlier) seems likeliest. He is a source for much of the Arabian information in Stephanus of Byzantium, in whose treatise on ethnics he is praised highly.