Bulfinch's Mythology in the context of "The Golden Bough"

In the fields of philosophy and mythography, euhemerism (/juːˈhiːmərɪzəm, -hɛm-/) is an approach to the interpretation of mythology in which mythological accounts are presumed to have originated from real historical events or personages. Euhemerism supposes that historical accounts become myths as they are exaggerated in the retelling, accumulating elaborations and alterations that reflect cultural mores. It was named after the Greek mythographer Euhemerus, who lived in the late 4th century BC. In the more recent literature of myth, such as Bulfinch's Mythology, euhemerism is termed the "historical theory" of mythology.

Euhemerus was not the first to attempt to rationalize mythology in historical terms: euhemeristic views are found in earlier writings including those of Sanchuniathon, Xenophanes, Herodotus, Hecataeus of Abdera and Ephorus. However, the enduring influence of Euhemerus upon later thinkers such as the classical poet Ennius (b. 239 BC) and modern author Antoine Banier (b. 1673 AD) identified him as the traditional founder of this school of thought.

Thomas Bulfinch (July 15, 1796 – May 27, 1867) was an American author born in Newton, Massachusetts, known best for Bulfinch's Mythology, a posthumous combination of his three volumes of mythologies.