Across the world, Quidem (Quidem 
) is an extremely rare masculine forename. Much more frequently, Quidem is the last name as well as the forename.
Jay, Jovita, Jessie, Julius, Julita, Nestor, Nenita, Edelyn, Isidro, Marilou, Martina, Manilyn, Madelyn, Madilyn, Melanie, Andrado, Anacito, Anselmo, Abdulia, Abigail, Avelino, Carlito, Danilo, Rejean, Renato, Ronald, Job, Mark, Carl, Joel, Mario, Myrna, Apple, Ciara, Roddy, Robel, Kenneth, Roger, Grace, Lydia, Jorge, Oscar, Marlyn, Marvin, Shaira, Adinda, Aileen, Rodney, David, and Raymark