I had never heard of Euhemerus, until a friend mentioned Gaiman‘s American Gods, and I stumbled across a reference to Euhemerism, while reading up on Baldr, the Norse god:
In the 12th century, Danish accounts by Saxo Grammaticus and other Danish Latin chroniclers recorded a euhemerized account of his story. Compiled in Iceland in the 13th century, but based on much older Old Norse poetry, the Poetic Edda and the Prose Edda contain numerous references to the death of Baldr as both a great tragedy to the Æsir and a harbinger of Ragnarök.
So, who was Euhemerus, and what is Euhemerism?
Euhemerus (????????, Euh?meros) (working late fourth century B.C.) was a Greek mythographer at the court of Cassander, the king of Macedon. Euhemerus’ birthplace is disputed, with Messina in Sicily or Messene in the Peloponnese as the most probable locations, while others champion Chios, or Tegea.He is chiefly known for a rationalizing method of interpretation, known as Euhemerism, that treats mythological accounts as a reflection of actual historical events shaped by retelling and traditional mores. In the skeptic philosophical tradition of Theodorus of Cyrene and the Cyrenaics, Euhemerism forged a new method of interpretation for the contemporary religious beliefs. Though his work is lost, the reputation of Euhemerus was that he believed that much of Greek mythology could be interpreted as natural events subsequently given supernatural characteristics. Living at court in the generation following the superhuman feats of Alexander the Great and Alexander’s subsequent deification, with the contemporaneous “pharaoization” of the Ptolemies in a fusion of Hellenic and native Egyptian traditions, Euhemerus was trained in the rational philosophizing current of Hellenistic culture; the two strains meet in his materialist rationalizing of Greek myth. “Euhemerus may be credited as the writer who systematized and explained an ancient and widely accepted popular belief, namely that the dividing line between gods and men is not always clear,” S. Spyridakis, among others, has observed.
Again, this was in the late fourth century B.C.