I talked to Marjorie, then Mortimer, and followed all of the dialog options. I ended up killing Ted Gunderson and framing his dad for it. Mortimer says that the banquet went swimmingly well, but there seems to be nowhere to follow up on the alliance question. Marjorie seems to have disappeared, but the quest pointer is still pointing at Mortimer. Caesar has nothing new to add and I'm getting nowhere. Any suggestions (reverting to an earlier save is an option, but I'd rather not).
Thanks.