Eurycyda
In Greek mythology, Eurycyda (Εὐρυκύδα, sic) was the daughter of Endymion and either Asterodia, Chromia or Hyperippe. Her brothers were Aetolus, Epeius and Paeon.[1]
With Poseidon, she mothered Eleius, after whom the region of Elis was named, as was its people, the Eleans.[2]
Several authors refer to her as "Eurypyle".[3]