Headstones have been knocked over and cracked and graves have been damaged in the Hobby's Yard cemetery.
Nearby resident Sally Ryan said that she had noticed the stock in the cemetery a number of times and had moved them on.
"There is faeces all over and around the graves and you can see the hoof prints on the knocked over headstones," she said. "I have photos also of the stock in the cemetery."
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Mrs Ryan said that her father-in-laws grave had been one of the ones damaged.
"This all comes after the tree fell done out there a few weeks ago," she said.
A Blayney Shire Council spokesperson said that council is investigating damage to grave sites at Hobby's Yards cemetery reported by the public, which may potentially have been caused by livestock.