John J. Bitter, age 80, late of Orland Park. Beloved husband of Jo Ann (née Stoffle); devoted father of John (Dawn) Bitter and Janel (fiancé Rick Gerencir) Bitter; proud grandfather of Brady and Jillian; loving brother of Richard (Madalyn) Bitter and Marianne Bitter; kind uncle of Andrea, Rick, and Matt. John was a former Wisconsin Steel employee with 18 years of dedicated service. He loved spending his time fishing at Lake Sedgwick. Services and interment private.