I checked your message again. Your grandfather Carl. Did he marry a Wilhelmina Brunner?
Hello Nan Curtis: I am the great grandson of a Wilhelmina Knab from around La Salle, Monroe Co., MI. Her family continues to live in that vicinity. She and her husband John Ott lived for awhile in Toledo, Oh. He was tragicaly killed in a RR accident in 1896. She eventualy returned to live near or on the Knab family farm with their youngest son not long after. She and John had 4 children Elma, Julia, Carl (my grandfather), and Theodore. Her parent's names were Charles & Margaret Knab to the best of my knowlege. Wilhelmina died in 1942 and is buried at Trinity Lutheran Cemetery, Monroe, Michigan. Hope this is the same Knab or Knapp lady you are researching. Sinc., Norm Ravely