Original: It was founded by the Romans between 50 and 44 BCE under the name of Colonia Iulia Equestris or Colonia Equestris Noiodunum, the urban center of which was called Noviodunum.
Simplified: Nyon was built by the Romans between 50 BCE and 44 BCE, and was called "Colonia Iulia Equestris" or "Colonia Equestris Noiodunum".