In Greek mythology, Astypalaea or Astypale (Ancient Greek Ἀστυπάλαια) is a beloved of Poseidon and mother of island heroes — notably Ancaeus of Samos and Eurypylus of Cos. Traditions make her a Phoenician princess (sister of Europa) or a nymph of the Imbrasus near Parthenia; the island Astypalaia was said to take her name.
Adapted from Wikipedia, "Astypalaea" · CC BY-SA 4.0
I.Mother of Ancaeus and Eurypylus
Apollonius (Argonautica 2.851) has Hera kindle courage in Ancaeus, whom near the waters of Imbrasus Astypalaea bore to Poseidon — the Samian helmsman from Parthenia. Apollodorus (Bibliotheca 2.7.1), narrating Heracles' night assault on Cos, names the slain king Eurypylus son of Poseidon by Astypalaea.
Other encyclopedic strands make her daughter of Phoenix (and Perimede or Telephe) and sister of Europa, seduced by Poseidon — a Phoenician princess reframed as island mother. Both genealogies converge on Poseidon and the Aegean island heroes.
II.Homonym care
The atlas id astypalaea is this Poseidon-beloved mother alone — not the modern island as a geo-only place without the mythic person.