What intrigued me about the photo when I first saw it was the picture hanging on the wall to the left.
It looks like a photo of six men.
Here is a close up of the picture on the wall:
Unfortunately, the image is too grainy to distinguish faces in the picture.
Several years later, I received a photo of Ann McGivney Sullivan (1836-1915) the wife of James Sullivan (c1830-1898) -- brother of Philip J. Sullivan -- from a great, grandson of Ann and James, Joe Sullivan. In this photo of Ann you can see a similar photo on the wall behind her. My guess is this photo of Ann is from 1910 or perhaps a little later given her age.
Seeing the two pictures in separate Sullivan homes led me to believe the photo was most likely of the extended Sullivan family.
Then, I came across this photo of Philip J. Sullivan in the album of Thomas A. Sullivan (1908-1996), grandson of Philip J. Sullivan. It is believed to be from the late 1870s or early 1880s given the clothing and chair in the photo.
When I look at the picture on the wall, especially in the home of Philip J. Sullivan, the male on the right in the back row looks very much the face in the above photo.
So, if Philip J. Sullivan (1840-1915) is in the photo, might this be a photo of the five Sullivan male children who immigrated to the U.S., plus who else?
Michael Sullivan - c1826 - 1915
James Sullivan - 1830 - 1898
Patrick Sullivan - 1832 - 1881
Andrew Sullivan - 1833 - 1881
Philip J. Sullivan - 1840 - 1915
Other known brothers: Thomas Sullivan (c1831-b1915) and Matthew (1841 - ?) both remained in Ireland.
Update January 21, 2019. Another brother, Rev. Peter F. Sullivan (c1838-1896) has been identified. He lived in Pennsylvania his whole adult life. It is very possible he is the "sixth" man in the photo! View Peter F. Sullivan (c1838-1896).