Joseph Petitpren & Mary Schultz would have been my great grandparents. Their daughter Agnes Petitpren Schaldenbrand was my grandmother.
The children of Joseph Petitpren & Mary Schultz were:
Irene Petitpren Stalh
Edna Petitpren Barr
Agnes Petitpren Schaldenbrand (twin)
Marion Petitpren Folske (twin)
Alice Petitpren Keller
Edgar Petitpren (wife Catherine Fochia or Foucher?)
Father Roy Petitpren
Andrew Petitpren (wife Edith ?)
Agnes Petitpren married Roy Schaldenbrand and had one child named Eugene Schaldenbrand
Eugene Schaldenbrand married Anita Hart and had 5 children:
Cynthia Schaldenbrand Walker
Ann Schaldenbrand Plegue
The Schaldenbrand family reside in the St. Clair County and Macomb County area.
I'm sure if I spent some time, I could come up with more information on the Petitpren's!