All over the world, Gerthe (Gerthe 
) is an extremely rare female first name. More frequently, Gerthe is the last name as well as the forename.
Jon, Angela, Ayrton, Cheryl, Claire, Dieter, Jereme, Travis, Michael, Shirley, Andreas, Kathryn, Jaynita, Jessica, Patricia, Pedersen, Rosemary, Jonathan, Jennifer, Wolfgang, Stephanie, Alexander, Elsie, Christian, Joyce, Gerri, Alex, Anne, Karl, Ruth, Greg, Lisa, John, Jess, Judy, Tori, Eric, Hans, Steph, Aloha, April, Chris, Kevin, Paula, Devon, Duane, Gunar, Laura, and Nathaniel