Meet Grace (older child on right) and her sister, Alice Wilkins. According to the cabinet card, Grace was born in 1878 and Alice was born in 1880.
I did a search of census records found a potential match in the 1891 England Census, but the dates are a bit funky...in this Census record Alice was born 5 years later then the info on the photo states and Grace was born in 1881, not 1878, in Cheltenham, Gloucestershire, England.
Anyone want to find more info? Up for the challange?