Cytherus or Kytheros (Ancient Greek: Κύθηρρος or Κύθηρος), also known as Cytherum or Kytheron (Κύθηρον), was one of the twelve cities of ancient Attica, and afterwards a deme. Pausanias states that the nymphs of the river Cytherus in Elis were called Ionides from Ion, the son of Gargettus, when he migrated from Athens to Elis.
- So in inscriptions
- Strabo. Geographica. ix. p.397. Page numbers refer to those of Isaac Casaubon's edition.
- Harpoc., s.v.; Suda, s.v.; Phot., s.v.; Stephanus of Byzantium. Ethnica. s.v.
- Pausanias. Description of Greece. 6.22.7.
- Richard Talbert, ed. (2000). Barrington Atlas of the Greek and Roman World. Princeton University Press. p. 59, and directory notes accompanying.
- Lund University. Digital Atlas of the Roman Empire.