Also, the first name Mélodie appears for the first time in France in 1970. If you need real french 1790 first names, here' is a short list (source here, a 1792 civil registry excerpt):
Female first names: Marie, Catherine, Claudine, Jeanne, Anne, Françoise, Marguerite, Jacqueline, Philiberte, Thérèse, Elizabeth, Louise, Pierrette, Charlotte, Denise, Gabrielle, Antoinette, Marthe, Mathilde, Rose, Aimée, Claudine, Julie, Léonie...
Male first names: Antoine, Jean, Claude, Jean-Baptiste, Jean-Marie, Pierre, Jacques, François, Georges, Philibert, Denis, Henri, Louis, Alexandre, Barthélémy, Christophe, Étienne, Gaspard, Guillaume, Charles, Michel, Paul, Sébastien, Thomas, Léonard...
Even if these first names were given to newborn babies in 1792, all of them were already used for centuries.
