In all the world, Rossberg (Rossberg 
) is a very rare male first name. Much more prevalently, Rossberg is the last name as well as the forename.
Mr, Adam, Carl, Clio, Biff, Karl, Kirk, Kyle, Paul, Ralf, Rick, Rita, Ruby, Russ, Ryan, Dave, Dirk, Dora, Doug, Gary, Gina, Lars, Anne, Lisa, Anna, Alan, Ms, Max, Sam, Sue, Ann, Amy, Pat, Dan, Lea, Liz, Jan, Jay, Joe, Tim, Eva, Uwe, Mary, Mara, Maik, Mike, Sara, Andy, and Lori