Legend has it that, the name of Agia Galini was given by Empress Eudocia of Byzantium when her ship sailing to Africa faced a big storm close to the ancient city of Soulia. Asking for the help of Virgin Mary, the Empress suggested that the crew approach the shore, and vowed she would build a church dedicated to Virgin Mary if they could find shelter.
Indeed the ship moored safely to the naturally sheltered beach of the village, and the Empress built the temple, as promised. The temple was dedicated to the so-called 'Holy Virgin of Serenity' after which the village was named.