I stumbled onto some Northrup Cemetery info at https://www.findagrave.com/cemetery/2609256/northrup-cemeter...
Note the link there with info on some of the clan buried there, including.
I have some more info on the cemetery, which I can share if anyone is interested. My name is Stephen Northrup (Steve). My father's name is George A Northrup, who was raised by his grandfather Charles Northrup. Charles Northrup was the last one to live on the clan's original land grant. Of the original 10,000 acres, 5600 remained under his ownership when he died in the early 1950s. In more modern times the Northrup family called it The Farm. He lived there alone for the last 30 years of his life, and still hunted into his 90s. i met my Great Grandfather once when i was a child. He drove up to Le Roy, NY where we lived. He drove up and back the same day in his 1930s Dodge coupe. Thats a 300 mile trip.
Here's some more info, and it includes a book referencehttp://grandmascabin.org/northrup.html