In all the world, Lefer (Lefer 
) is a very rare unisex first name. Much more prevalently, Lefer is the last name as well as the forename.
Mr, Josh, Joel, Jean, Eric, Emma, Hugo, Igor, Yann, Maria, Marie, Manon, Mauro, Sandy, Serge, Alain, Alyce, Andre, Annie, Carla, Carol, Celia, Léa, Clara, Luiz, Leon, Ms, Max, Ann, Pat, Guy, Gil, Luc, Jay, Ivo, Mary, Mark, Matt, Alex, Alan, Anna, Adam, Caty, Clã, Paul, Rudy, Greg, Loic, and Cindy