Dennis is the DNA person you are looking for I believe. Write him direct. I sent him what my family knew, and also a living person with whom he could talk to, of that family.
As for any misinformation, I presented what was in the census. Censuses are often times just a reference point, in terms of errors, but they also may offer new information. I am still for example, trying to figure out the relatives in Maine, when someone told the census taker, my gg grandmother was born there, when it was ever clear before, she was clearly from Ireland.