In all the world, Siefker (Siefker ) is an extremely rare unknown gender given name. Much more frequently, Siefker is the last name as well as the forename.
Mr, Sara, Seth, Alex, Alan, Andy, Abby, Adam, Chad, Chey, Carl, Cory, Cole, Cody, Curt, Barb, Beth, Brad, Bill, Kara, Mike, Matt, Mark, Mary, Ms, Max, Meg, Sue, Ann, Amy, Ben, Kim, Ray, Kala, Rob, Dan, Gus, Jan, Jay, Joe, Jen, Jim, Tim, Mari, Roy, and Kent
) is an extremely rare unknown gender given name. Much more frequently, Siefker is the last name as well as the forename.