The Hayden DNA Project currently has 22 members tested. The Hayden pedigrees are as follows. Four descendants of Francis Heydon of MD; 3 well documented, one shown where connects to Francis' line. Six descendants of John Hayden of MA; 3 well documented, 2 have secondary sources at some links and 1 who had no clue he was related. This line is fortunate to have the unique pair of values in the first marker panel. Two descendants of William, both well documented. Four Hadens with two lines that may or may not share a common ancestor since immigration to America. Five Irish Haydens with one awaiting results. None of the four appear to share a common ancestor. One Hayden of unknown origin who connects to no other tested lines. Since mutation of the Y-chromosome happens at random generation changes, one can only calculate the probability of a shared common male ancestor. Disproving a connection is generally easier than establishing one. For example, since there was only a 0.02% of John and William sharing a common father, I believe we can conclude they were not brothers. So, Carol is correct. Y-chromosome DNA testing analysis is an exercise in statistics. Increasing the number of markers tested and increasing the number of people tested both increase the sample size which, in turn, decreases the width of the confidence interval. However, researchers looking for the father of John have a great advantage in the unique combination of two markers on the Y-chromosome. In this case, the sample size of the American cousins is large enough. What is now needed is English cousins to get tested. You can see the DNA project results at http://www.rhhandson.com/hayden_dna.html . Steve Hayden -----Original Message----- From: hayden-bounces@rootsweb.com [mailto:hayden-bounces@rootsweb.com] On Behalf Of CEVaughan412@aol.com Sent: Thursday, June 14, 2007 7:08 AM To: hayden@rootsweb.com Subject: [HAYDEN] DNA - John Hayden I have a question about the Hayden DNA testing. How many Hayden's have been tested in this project? While I believe that DNA testing is the only answer to this John - Gideon thing, we need numbers to prove it for sure. How many people aren't who they think they are due to extra-marital births, unrecorded adoptions etc over the years? I just think that there is not enough Hayden descendants in the DNA database and we certainly need those across the Pond to join. Carol ************************************** See what's free at http://www.aol.com. ------------------------------- To unsubscribe from the list, please send an email to HAYDEN-request@rootsweb.com with the word 'unsubscribe' without the quotes in the subject and the body of the message