Aethusa

Aethusa (Gr. Αἵθουσα) was in Greek mythology a daughter of Poseidon and Alcyone, who was beloved by Apollo, and bore to him Eleuther.

The word aethusa was used as an epithet for a portico that was open to the sun, that is, Apollo.

According to Pliny's Naturalis Historia, Aethusa is also the eponym of the Italian island which is now called Linosa

 This article incorporates text from a publication now in the public domain: Smith, William, ed. (1870). "". Dictionary of Greek and Roman Biography and Mythology. 

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