In the entire world, Vadon (Vadon 
) is a very rare gender-neutral given name. Much more frequently, Vadon is the last name as well as the forename.
Mr, John, Jean, July, Tina, Tibi, Eric, Emma, Frã, Ivan, Yves, Marie, Manon, Sandy, Serge, Steve, Scott, Alain, Andre, Clém, Boris, Brice, Léa, Bruno, Lynn, Glen, Ms, Jo, Mã, Sã, Cã, Ben, Bud, Guy, Ted, Tim, Eva, Marc, Mark, Maud, Anne, Paul, Phil, Rene, Remi, Ruth, Ryan, Gál, and Kelly