OBITUARY INFORMATION FROM FIND-A-GRAVE WEBSITE:

John Alvin Sluder-Klipp
BIRTH          12 Mar 1964, Gary, Lake County, Indiana, USA
DEATH          2 Jun 2001 (aged 37), Hobart, Lake County, Indiana, USA
BURIAL         Cremated
MEMORIAL ID    232440280

At some point dropped his father's surname ( Sluder ) and started using his mother's ( Klipp ). Possibly after his parents divorce.

This information was obtained from: https://www.findagrave.com/memorial/232440280/john-alvin-sluder-klipp.