Polyxena was the youngest daughter of King Priam and Queen Hecuba of Troy. Achilles discovered her drawing water at a well and fell in love with her. Here is another depiction of Polyxena and Achilles at the well.
You can also find more myths and legends for the week of November 18-24 here. For more information and links to the actual javascript code, see the Myths & Legends Widget Reference Page.