It's been awhile, hasn't it. How are you doing? I just received this info from a cousin of ours. So here goes.
John Grauberger married Myrtle Leona Lee. They had one child named John Reginald Grauberger. John Reginald was born on August 19, 1925 in Okeene, Oklahoma and he died May 3, 1973 in Oklahoma. John and Myrtle divorced and she later married William Charles Kirk and they had four children.
Also, have you heard from Jason Grauberger? I've been trying to get a hold of him but his e-mail address is no longer valid. He is descended from the John Reginald Grauberger listed above and I have positively tied him to Myrtle and John.