About a month ago, David and I asked 3 men who had taken the 12-marker DNA test to upgrade to the more detailed 25-marker test. Each was chosen because he had a well-documented line to one of the three major ancestors. All three came through for us, and their results came back today. Folks, it's pretty clear now that the lines of Robert, Richard and Thomas/William are entirely separate. The numbers indicate virtually no potential relationship among them. A score of -3 or -4 is too broad to be considered connected by an ancestor. From the 12 marker test, there seemed to be some possibility that the Richard and Thomas/William lines might be connected. At 12 markers, there was only one marker different by two steps, giving a score of -2. Adding the last 13 markers, the score is now -8. The difference between Richard and Robert has jumped from -4 to -7, and the difference between Robert and Thomas/William changed from -4 to -9. A fourth man from the Robert line was also tested. The two from Robert's line were a 25/25 match. These results did allow us to make a determination about a man with a name different from Sisson who had a 12/12 match to one of our lines. When the test was expanded, the actual score ended up being -8. His 12-number match was simply coincidence, or in DNA parlance "random convergence". Now we have answers to one of our biggest questions. If you have questions, I'll try to answer them. Sharon Sisson Miller