John Douglass Hartz Obituary
It is with deep sorrow that we announce the death of John Douglass Hartz of Menominee, Michigan, who passed away on May 18, 2026, at the age of 87, leaving to mourn family and friends. Leave a sympathy message to the family in the guestbook on this memorial page of John Douglass Hartz to show support.
He was predeceased by: his parents, Douglass Hartz and Martha Hartz (Miller); and his son Scott. He is survived by: his wife Barbara Bergstrom of Menominee; his children, Susan Relling (Thomas) of Shoreview, MN, Steven Hartz (Kelly) of Seward, AK and Kevin Hartz (Lori) of Greenville, WI; and his grandchildren, Carolyn, Raechel, Stefan, Alex, Olivia, Sonja, Lydia and Peter.
Keep John's legacy alive by donating to a charity in need.
