Livy speaks of an hermaphrodite being put to death in Umbria, and another in Etruria.
Cicero, Aristotle, Strabonius, and Pliny all speak concerning this subject.

Martial and Tertullian noticed this anomaly among the Romans.
Aetius and Paulus Aegineta speak of females in Egypt with prolonged clitorides which made them appear like hermaphrodites.

Throughout the Middle Ages we frequently find accounts, naturally exaggerated, of double-sexed creatures.

Harvey, Bartholinus, Paullini, Schenck, Wolff, Wrisberg, Zacchias, Marcellus Donatus, Haller, Hufeland, de Graff, and many others discuss hermaphroditism.

Many classifications have been given, as, e.g., real and apparent; masculine, feminine, or neuter; horizontal and vertical; unilateral and bilateral, etc.