>>2211944 (lb)
Pretty sure Q never mentioned her (except one mention of JL, which was John Legend), and I don't remember her mentioned in any of the links either … but who knows.
As for Jeffrey Alan Rothschild a.k.a Jeffrey Alan Zahler – didn't have a fixed address, and (for the family, if related), actually committed small time fraud.
So I'm not sure about his relations (if any) to the well-known family just because of the name (which for all I know he could have chosen himself as the con that he was) …. Had any connection been established?