Returning from Crete to Athens, Theseus and Ariadne, daughter of Minoas, stopped at Donousa. God Dionysus who lived on it fell in love with her and Goddess Athena ordered Theseus to leave Ariadne on the island so that she got married to Dionysus. And eventually Ariadne stayed on Donousa with Dionysus.Keros
According to a legend, Keros is the sacred island of the Ancient Greece and not Delos, as commonly believed. There is also a theory supporting that Keros is in reality the island of Asteria where God Apollo and Goddess Artemis were born.