Peggy is a nickname for Margaret, yes?
I think Margaret Schroeder was calling one of her siblings to see if they wanted to talk to her and got the message that she was dead to them. Schroeder is her married name. I presumed that Rohen was her maiden name.

I was interested as to why Richard did not immediately shoot the other fellow intervening in his business.

I liked the scene where Luciano and Lansky, clearly irritated by both Masseria and Rothstein, stay behind to talk after Rothstein left.

It will be interesting to see where the Jimmy relationship goes. In a past episode his mother told his wife she used to kiss his **** when he was a baby. They kiss on the lips to greet each other. There's some boundary issues there. I don't see how Jimmy can be angry at Nucky for his role as panderer and not be angry at the Commodore for his role as statutory rapist. It's a weird situation all around.