I am also looking for descendants of George W. "Pratt" Koonce married to Mary Herrin. My maiden name is Pratt. I married Howard Koonce, son of Bobby T Koonce & Virginia Chargois. All members of the Koonce family are buried in Big Woods Cemetery in Edgerly, Calcasieu Parish, Louisiana. George W. "Pratt" Koonce is buried in Big Woods Cemetery, born Nov. 2, 1835, died Jan. 25, 1923. From this information I believe he is somehow related to my Koonce family. My husband's grandfather was named Arthur Koonce, born Jan. 3, 1884 and died Nov. 1975.
If you find the names of George's children, please let me know. Also, if I can help you in any way please let me know.