Tim Welty, 25, had visited his parents’ home to fix their computer when his mum got in touch to say their camera had captured something unusual while he’d been round.
The CCTV image showed the shape of a large lady hovering over the sofa and the cocker spaniel looking up at her, with her ears pulled back in fear, at a time when Mr Welty was alone.
Dad-of-two Welty, from Manassas, Virginia, US, said: “I was completely alone in the house at the time. I was waiting for the computer to update as I was fixing it for my dad”
After sharing the image some Catholic friends of the family urged them to sprinkle holy water around the house to get rid of the spirit.
The family home is thought to be based on the location of a bloody American Civil War battle.
Mr Welty claims the woman seen in the picture looks like an old farm maid from the period.
He added: “It definitely looks like the shape of a woman.
“Our house is on the area where all the civil war farms were. In fact, our house is right on top of the location of the First Battle of the Bull Run – that’s where it would have been fought.