I am looking for a Mrs. Anna Gebeau who was living in southern Illinois in the late 1800's. She married ROBERT M. RHEA in Union County, probably in either Anna or Jonesboro on August 11, 1870. Gebeau would be her married name as she is clearly listed on the marriage certificate as Mrs. Gebeau. I suspect she had died or divorced by 1877 when Robert married Angeline Wallace. Any leads appreciated.