Pat, I can't speak for New Jersey genealogical societies but I can speak from eight years of experience researching Irish ancestors -- much of the research centered in Northern New Jersey. I have found that Irish-American families tend to be less well documented that some others. It may possibly be that historically, at least, anti-Irish sentiment played some part. But I certainly don't believe that is presently the case and I'm flabbergasted to read what a "certified genealogist" told you. Perhaps there was some misunderstanding? I've engaged a certified genealogical record-searcher from New Jersey, Anne Rodda, to help in my research and over the course of several years she could not have been more competent, helpful and concerned that I learn more about my Irish-American ancestors. By the way, if you are reseaching McMahons in Morris, Essex and Union counties and would like to communicate and perhaps eventually share information, I'd be delighted. Dave McMane