John Ohlenbusch
John Ohlenbusch died in 1910 at the Dunning asylum, the Cook County Insane Asylum in Chicago, where he was living at the time. His death certificate lists dementia as the cause. His great-grandson, speaking to WBEZ Chicago, does not know why John was at Dunning, and the family suspects the dementia may have been what later became known as Alzheimer's disease. The great-grandson said John's daughter, his grandmother, never talked about her father's death at Dunning.
Cause of death, as reported: Died of illness. The death certificate lists dementia as the cause, and the family suspects it may have been what later became known as Alzheimer's disease.
Reported by: death certificate; his great-grandson (family or their lawyers).