I have a little information but not a whole bunch.
John Benningfield was born in 1814 in Mount Sterling, KY. he died 7 dec 1881 in Pettis Co., MO He married Nancy Hall about 1836 in KY. Nancy Hall was born in 1814 in KY. She dies 20 January 1892 in Hughesville, Pettis, MO. They had 4 daughters, Nancy J. (Nannie), Adaline, Martha, and Mary Elizabeth. I don't have the records right in front of me but I seem to recall that both John and Nancy are buried in Pettis County, MO, but I can't remember the name of the cemetery off the top of my head.