When Melanie Chisamore saw the growing pile of quarters left on her great-great-great-great-grandmother's gravestone, she felt a sense of awe. 

"I was overwhelmed ... with just how special it seemed," said Chisamore, who believes people leave the coins because that was the price her ancestor Jane Elizabeth Martin Barnes charged to tell a fortune back in the mid-1800s.

"The fact that the number of coins keeps increasing means that more and more people are learning about her and understanding her p…