Santorini was named by the Latin Empire in the thirteenth century, and is a reference to Saint Irene, from the name of the old cathedral in the village of Perissa. Before then, it was known as Kallístē (Καλλίστη, "the most beautiful one"), Strongýlē (Greek: Στρογγύλη, "the circular one"), or Thēra. The name Thera was revived in the nineteenth century as the official name of the island and its main city, but the colloquial name Santorini is still in popular use. During the Ottoman Empire's domination of the Aegean Sea, the Turkish exonym for the island was "Santurin" or "Santoron".