John and Wilhelmina were my gg grandparents. Their daughter Wilhelmina (Minnie) born in 1870 was my great grandmother. Minnie married Louis Otte in Wisconsin. I remember Louis when I was a child. Minnie had died by then. I have a copy of the death certificates for John and Wilhelmina. They are buried in the Forest Home Cemetery, Forest Park, Cook Co., Chicago, Illinois. Their granddaughter Myrtle Otte told me that they were born in Mecklenburg, Germany. John was born 2/28/1839 and died 5/28/1915. Willhelmina (Minnie) was born 3/1838 and died 11/19/1907.