Mary Pierstorff Obituary
It is with deep sorrow that we announce the death of Mary Pierstorff of Onalaska, Wisconsin, who passed away on May 2, 2026, at the age of 74, leaving to mourn family and friends. Leave a sympathy message to the family in the guestbook on this memorial page of Mary Pierstorff to show support.
She was predeceased by: her parents, Marjorie Cummins and Donald Cummins. She is survived by: her husband Lawrence Pierstorff; her children, Joel Pierstorff (Christina), Diana Horman (Phil) and Jennifer Pierstorff; and her siblings, Byron Cummins (Carol), Carolyn Holback (Jim), Nancy Reeves (Richard), Dorothy Hopkins and Pat Roen (Jerry). She is also survived by nine grandchildren and six great-grandchildren.
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