In all the world, Mazelis (Mazelis 
) is an extremely rare feminine first name. Much more prevalently, Mazelis is the last name as well as the forename.
Mr, Peace, Dalia, Dylan, Laura, Janis, Tomas, Wanda, Waldo, Sandra, Aldona, Alfred, Andrei, Robert, Ronald, Debbie, Darius, George, Joseph, Nijole, Noreen, Edward, Peter, Brian, Boris, Craig, Amy, Dee, Lev, Liz, Anne, Bran, Paul, Ruta, Lucy, Jack, Vladas, John, Joel, Eric, Falk, Fred, Olga, Marie, Matas, Stacy, Scott, Carol, Joan, and Michael