I am not a Koon descendant, however the Centre County Genealogical Society has just refurbished and rededicated the Cedar Creek Cemetery in Harris Township, Centre County where Susanna Snarr Koon, John Koon and several others are buried. I suggest you send a query directly to pacentre@rootsweb.com as this is often a more active message board. We had a couple of descendants present at the rededication who would likely contact you.
Judy