According to legend, "Tivat" is derived from Illyrian queen Teuta. Teuta had a residence in Rhizon and a summer residence between the church of St. Rocco in Donja Lastva and Seljanovo. The name could also come from the names of old Christian saints: Saint Theodulus, Theodocius or Theodotus. Besides the popular name Theudo, a Latin expression Latus Tiuveti comes from the 16th century. Finally, the name could originate from Celtic word "touto", town. Archaeological sites attest that the area was inhabited in antiquity, with Greek and Roman settlements. Tombs and tombstones from the Roman period were discovered in Lastva and Opatovo.