The information I have on John Hauk came from his Obituary. It Indicated that He had a couple siblings, Daniel and Bettie(Vanausdel) and an unknown half-sister.I have the obit scanned in the computer if it would be of interest, send me an e-mail on the side. email@example.com
So far I have found their marriage certificate online. But need to request a copy. I have been running into walls also finding their parents.