The image was taken inside on an iPhone, but after being uploaded to Facebook, the face was so realistic, it can actually be tagged.
Carly O’Callaghan took a photo with father Glenn and brother Sean, before accidentally snapping the ceiling of the family home.
She said: “My brother Glenn came down from Sligo and I took a picture of him with my niece Carly and nephew Sean in the kitchen.
“My niece took the phone from me to pass it over but it took a photo of the ceiling by accident.
“I didn’t take any notice until I looked though the photos again.”
Sceptical Ciara uploaded the image for other views.
She told the Irish Mirror: “To try to find a logical explanation my brother-in-law got the photo and took it into Photoshop, where he changed the colours, darkened it and increased the contrast.
“Rather than show the logical explanation we were hoping for, it seemed to simply further the level of mystery.
“We don’t have anybody who has a face remotely similar to this one in terms of dimensions or physical appearance.
“There is nobody else that looks like that and it
“Some people are saying it’s like the Conjuring and some people are saying it’s a good spirit.
“I haven’t been on my own in the house yet. I don’t know if it’s comforting or not but if I saw it again I might freak out.”
“At this point, we are simply just reaching out to the public at large to see if there can possibly be a straight forward explanation to the accidentally taken photo.
“We have checked all the photos on the iPhone both in the camera roll and in the photo apps on the iPhone and we don’t have a photo of anybody who looks like this.”