Wikipedia
Endeïs
In Greek mythology, Queen Endeïs was the wife of King Aeacus and mother of Telamon and King Peleus. (As Peleus was the father of Achilles, Endeïs was Achilles's grandmother.) The name is a dialect variant of Engaios (Ἐγγαίος, "in the earth").
Endeïs was either the daughter of Chiron and the nymph Chariclo; the daughter of Pandion of Athens; or the daughter of the Megarian warlord Sciron.
In some versions, Endeïs's father, Sciron, married her to Aeacus after he declared Sciron the military leader of Megara.