Sarah Denny

https://www.findagrave.com/memorial/54915747/sarah-elizabeth-denney

Sarah was daughter of William and Partlow Mills Suddarth. Married Samuel "Old Sam" Denny in Albemarle Co., Va.
She was buried at the mouth of the Ararat River in Surry Co., NC

Maiden name sometimes spelled 'Suddarth'.

Wife of Samuel Denney. After Sarah's death, he relocated to Gallia County, Ohio.

Precise directions to Sarah's burial spot are contained in the book entitled "Song With a Tenor Lead: The Story of Joseph William Boyd and Mary Cerena Hampton with Ancestors and Descendants" by Jim Allen Boyd (pub. 2002), pages 166-167.

It states:
"Sarah was buried under a pile of rocks on the South side of Pilot Creek, near the mouth, on a rise at the foot of a hill. In 1999 a pile of rocks which may mark the exact location of her grave was visible. There was no mistaking it because there was only one pile of rocks in the area. Her gravesite is at a beautiful location with a lovely view up the Ararat River. To get to Sarah's gravesite follow the map to the end of Pinnacle View Church Road. At the end of the road there is a lane that goes sharply to the left and a lane that goes off at a right angle to a house. Do not take these. Take the small lane that goes straight ahead. Continue down this lane until you come to a house; there you will need [...] Pilot Creek/Ararat River Conjunction. Sarah's gravesite is to the left. The rock pile which may mark Sarah's grave is nearly entirely covered with dirt and, in the Fall, with leaves. However, once you see it, it will be obvious."

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Gravesite Details
Sarah was buried under a pile of rocks on the South side of Pilot Creek, near the mouth, at the Pilot Creek/Ararat River Conjunction.