In the entire world, Broaden (Broaden 
) is an extremely rare boy's given name. Much more frequently, Broaden is the last name as well as the forename.
La, Lisa, Lori, Jack, John, Tony, Toni, Nina, Nora, Ella, Edna, Eric, Emma, Evan, Vaan, Faye, Olin, Ware, Will, Xena, Morie, Sarah, Leah, Shana, Gary, Dora, To, Ben, Pat, Roy, Don, Lee, Lis, Joe, Jes, Tom, Mary, Mark, Mike, Alan, Anna, Carl, Kent, Ruby, Deja, Dawn, Daja, Doug, and Sekai