In conjunction with a Challenger 3rd cousin, I have started a Challenger Y-DNA project at FTDNA to try to investigate origins back beyond paper records. Our own line descends from a Job Challenger probably buried at Lyncombe and Widcombe in 1796. (This is NOT the well-recorded Job of Clutton). We have a Y-DNA to another Challenger for whom we trace origins to Bath about 1810.
I have extensive experience in Y-DNA analysis and over 40 years of research into Challenger families. Origins may be in North Somerset Challoners. We encourage MALE members of these families to join us with a Y-DNA test. I'll be happy to discuss possibilities privately.