Hi Daniel,
It seems to me that Maybelle Thorne made it pretty clear she was dining with the Wideners. Stengel quotes her as saying "I was in that party". I don't think someone on a nearby table would bother to notice the number of cigars Smith smoked even if it was clear he wasn't drinking.
However, Stengel may well have misquoted her.
Also, a table for 8 doesn't appear sufficiant even for the well-known diners. This is my understanding of who was present.
1, George D. Widener
2, Eleanor Widener
3, Harry Widener
4, John B. Thayer
5, Marian Thayer
6, Capt. Smith
7, Maj. b***
8, William Carter
9, Lucile Carter
I have read several times that Clarence Moore was a guest. This was not the case.
Also, Daisy Minahan, in her affidavit mentions there being, "perhaps a dozen men and three women". If this is the case, it seems a possibility that the two Williams men were present as he was a prominent Philadelphian (please correct me if I'm wrong)
She may have meant half a dozen, in which case I'm sure you're right.
Thanks for the info on their acquaintance with Harris/Futrelle
Regards
Ben