Hairon is an entry on page 318 of DAUZAT, Albert. Dictionnaire étymologique des noms de famille et prénoms de France, published in 1987.Next to that name it says: V. HÉRON. The latter is on page 326 and is apparently in re a man with long legs.R. Niles
The only one I was able to find in "Tous le prénoms français at régionaux" by Jean-Maurice Barbé is Amicie, which is related to Aimé, from Latin "amatus", beloved. Hairon looks simialr to Aaron. The others look very strange!