The picture was taken in 1859, when Jennie was 8 and George was 4. Augustus and Ellen McKinstry had two more children: Nellie, born in 1858, and Susie, born in 1862. These are the children who, in 1910, sold their parents' house to Delbert Dinehart, who demolished it to build the yellow brick Colonial Revival mansion that stands on the site today.
A curiosity about the portrait is the flag that young George is holding. One of the stars on the flag is larger than the others--a phenomenon that has occurred only twice in the history of the American flag and only once prior to 1859: in 1837, on the 26-star Great Star Flag. Like the flag in the portrait of the McKinstry children, the Great Star Flag had one larger star in the center of the blue field, but unlike the flag George is holding, the rest of the stars were arranged to form a five-pointed star.
In 1859, when the picture was taken, there were 33 states, and 33 stars representing them on the flag. All the stars were the same size, and they were arranged in five rows of seven, seven, five, seven, and seven.