I sure am related. My great grandmother was Esther Killer, who married Jack Jones.
Looks like you must be a descendant of Thelma Irene Killer?
I am part of an MSN Killer Group where my third cousins and more distant rellies all discuss the family. We have data back to the 1500's.
Actually I don't have a real lot of detail on Jo and Grace's descendants. Contact me on peterr@jones.name and I can put you in touch with all these distant rellies, and give you heaps of info. We have tons of info on the Killers, and be assured that every Killer in Oz is a rellie of yours!