Aethlius

In the main surviving tradition Aethlius is presented as the first ruler of the land later called Elis and is named as a son of Zeus and Protogeneia (daughter of Deucalion); he is the father of Endymion. Variant genealogies appear in other accounts: some make him a son of Aeolus (or equate Aeolus with Zeus in naming), and summaries of Eusebius report a tradition in which Aethlius staged contests (modelled on the Idaean Dactyls' 'Olympics') to challenge his sons. These variants are given across the surviving summaries of Pausanias, later compilations, and modern reference entries.

No ancient source in the supplied materials provides a physical or iconographic description of Aethlius. He is attested only as a genealogical and royal figure in literary/foundation contexts rather than as a described visual type.

Sources do not attribute supernatural powers to Aethlius. He is reported to have led Aeolians from Thessaly to found Elis and to have been the first ruler there (founder-king activity). In a tradition reported via Eusebius he is said to have used a competitive ritual (likened to the Idaean Dactyls' contests) to challenge his sons, an element used to connect his name with the origin of the term for contestants ('athletes'), but no miraculous abilities are recorded in the provided material.