The marker of William Jones, 17, in an unmarked grave site in Cheltenham. State officials say hundreds of youths are buried in this area. (Photo by Rob Wells/Capital News Service)By Mira Beinart The Maryland Department of Juvenile Services was awarded a $200,000 grant to begin searching for the remains of hundreds of Black boys in the woods near the Cheltenham Youth Detention Center, the first step toward formal recognition of the boys’ deaths. …