Hellen
In Greek mythology, Hellen was the progenitor of the Hellenes. His name is also another name for Greek, meaning a person of Greek descent or pertaining to Greek culture, and the source of the adjective "Hellenic".Mythology
Hellen was the son of Deucalion and Pyrrha, and was the brother of Amphictyon. By the nymph Orseis he became the father of three sons: Aeolus, Xuthus, and Dorus and a daughter Xenopatra.
According to the Hesiodic Catalogue of Women, his sons were themselves progenitors of primary tribes of Greece: Aeolus the Aeolians, Dorus the Dorians, and Xuthus the Achaeans and Ionians through his sons Achaeus and Ion.
According to Thucydides, Hellen's descendants conquered the Greek area of Phthia and subsequently spread their rule to other Greek cities. The people of those areas came to be called Hellenes, after the name of their ancestor. The ethnonym Hellenes dates back to the time of Homer. In the Iliad, "Hellas" and "Hellenes" were names of the tribe settled in Phthia, led by Achilles.
In some accounts, Hellen was credited to be the father of Neonus, father of Dotus who gave his name to Dotium in Thessaly.Genealogy of Hellenes