Elevated Event Guests

Hello,

I'm trying to include all attendees from a past Elevated Event in my next mailing.  I have run Event Listing (saved as a list), but this doesn't include the guests of generous friends.  If Mr. & Mrs. Brown paid for the Robinsons, I enter it on the Brown's account and then add each Robinson as a guest.

Is there a way to design an output set element to not only collect the "hard credit" (e.g. when someone purchases tickets) to an event but also the "soft credit' constituents (Guests of a guest)?  I apologize if it's a very simple answer; I just have not been able to think of it.

Thank you!

Jessica