In the entire world, Lefman (Lefman 
) is an extremely rare unknown gender forename. Much more prevalently, Lefman is the last name as well as the forename.
Bob, Angela, Cheryl, Briana, Philip, Robert, Robyne, Ronald, Daniel, Donald, Gertie, George, Glenda, Gloria, Lester, Janice, Nicole, Vickie, Michael, Barbara, Pauline, Deborah, Alfred, Monica, Marsha, Irwin, Deb, Dan, Ted, Tim, Sara, Adam, Drew, Gary, Lisa, Jake, Leonard, John, Shari, Sheri, Susan, Scott, Carol, Betty, Karen, Diane, Tania, Halie, Troy, and Jeffrey