Hi Everyone,
Thanks again so much for the massive response, it is super helpful. Sorry I wasn't able to repond earlier, I will try to give better feedbacks on all the names proposed.. Also, we are in Edinburgh, so pretty used to foreign names, and we have no intention to move to a super rural/remote area. So:
Alexandre, Matthieu AND Matthew, Stephane, Lucien, Louis, Gabriel, Thomas/Tom, Nicholas/Nicolas, Paul, David, Phillipe, Pierre, Francois, Marc, Rémi, Étienne, Oliver, Vincent, Tristan, Mathéo, Thibault, Morgan, Theo, Ronan, Noah, Romain, Simon, Arthur, Augustin are names that we can't use due to family/close friends already 'using' them. Gutted as there are at least 5 names we would have loved!
Patrick (I like it but we know way too many Patricks and they are all over 50 yrs old in France) , Robert, Jacques, Serge, Gilbert, Jean-Paul, George, Yannick, Emile (although I think it is making a come back), Albert, Joël, Henri, Guy, Dominique, Gérard, Thierry, André, Yvan, Yves, Gilles, Daniel, Claude, Marcel, Denis are names that may sound lovely in English but are sadly very old fashionned in French, like VERY popular in the 1950-60s and I personnally can't see these names on a baby now. (Which also means, there are quite a few used by our respective uncles and parents' friends)
Edouard, Nathan, Lucas, Fabian, Wilfried, Elliot, Raphael, Maxime/Max, Eric, Victor, Bruno, Luca(s)/Luc, Samuel (LOVE it, but big no from husband), Emmanuel (nice name but way too associated with current French president), Arlo, Loïc, Xavier, Hugo, Kevin, Noël, Beau, Oscar, Axel, Jules, Clement, Stuart (although it would be a nice reference to the Auld Alliance indeed!), William, Christophe, Killian, Jeremy, Huw/Hugh, Adrian, Jonathan, Laurence, Gaspard, Quentin, Charles, Anthony, John, Aaron, are names that we (or just me or my husband) don't like, some because we just don't like how they sound, some because they remind us of someone we really don't like or also because in France they have been overused or the pronounciation sounds nice in one language but not the other.
We like Ewan a lot, but feels it is too scottish for us, and the French will never manage lol. I like Timeo/Timo, but my husband not so much and we prefer Timothée a lot more.
We are still considering, Sebastian/Bastian, Benjamin, Zachary, Yann, Martin (but the English pronounciation sounds like an old French female name... a reversed Gael in a way lol). We are not over Gael/Gaël and Thimothée, they are by far our favourite choices. 4 months left to think about it!
@CarmensGarden thanks, I will check the Miranda series
@Fink using the trema is actually a very good idea. It may not help people to pronounce it correcly, but it might help stating 'this is not Gail'...
Thanks again for the huge brainstorming!