Interesting...so you visited Bill Berkey's home on Lincoln Highway in Paoli, PA?
I don't know when the family changed their name to Berkey, but will ask some of the living Berkey's and let you know.Actually, two of Bill's daughers did marry (Anna May and Florence), but Margaret did not marry, and has since passed away.
I am aware of one other of James' children...Alberta of Berwyn. She married Milton Smedley. She was my mother's Geat Aunt, and my mother knew her as Auntie. It would be geat to get the information you have on the other 7 children.