Hmm...this poses a problem. I'm assuming the photo is that of a girl. I thought it might have been Edith, who was born in 1880, and is the only one I know of in the family born around that time. Her husband was born in 1876 (but surely this isn't a boy??) and he had a sister born in 1878 but she died in 1880. Also, that side of the family lived in Blackburn, whereas Edith's lived in Hampshire. The link provided by HandyPandy has the back of a carte de viste the same as this one which says it is from around 1882, so I thought I was on the right track with it being Edith.
This child is definitely someone from the family. We have a photo of my mother taken at about the same age and she is the spitting image right down to the hairstyle (when I first saw this old photo I thought it was my mother in dress up!), and photos of my sister at the same age are also identical. Some more investigating to do, I think.
Cathryn