Manon is an endearing French pet name for Marie or Marianne; it has the exotic yet straightforward feel that makes it a viable import.
Manon of the Spring was a gorgeous French film, Manon Lescaut a 1731 novel by Abbe Prevost, set in France and Louisiana, that was controversial in its day. It formed the basis of operas by Puccini and Massenet, and several films and TV series.
Manon is currently the fourth most popular name in France and Number 9 in Belgium.
British actors Damian Lewis, of Homeland, and Helen McCrory have a daughter named Manon.