Mulvaney family pictures

My mom sent me these, which I believe were scanned by either Joseph or John Griffin a few years ago. The one above has Julia in the middle, in a polka-dot dress, surrounded by her grandkids. Nan is the littlest one in front, with the doll, with her cousin Florence to her left. The other girl is Joan, and behind Joan is her brother Donald. The boy with glasses is George Kessell. In the back row on Julia's left is Grace Mulvaney Jones, and in front of Grace is Steve Kessell. On the far right, with the tie, is Tom Mulvaney.
This is Julia Mulvaney, again in the polka-dot dress, surrounded by her kids. I can identify Nana in the back row, and James is the man in the front row, which means I'd assume that Thomas is standing next Nana in the back. Auntie Mae is second from the left, to the right of Julia, and Grace is on the far right. As far as dates go for these pictures, and I assume they were taken the same day, I'm going to guess somewhere in the area of 1935 or just before? Can anyone tell for sure how old Nan is in the first one? I can't think of any other way to date them. Also, does anyone recognize the house in the background? Where were they?

This is Patrick Mulvaney. He looks like a young man, so the best I can say is late 1800s, early 1900s.

(In the top two pictures, Florence, Joan, Donald, and their father James were identified by Donald's daughter Maureen, whom I stumbled upon on ancestry.com when I noticed that her family tree had our (shared) Julia Toner Mulvaney on it! The wonders of technology and genealogy! Betty and John helped with everyone else.)