A triangulated segment of DNA refers to an overlapping segment of DNA that is shared by three or more individuals who are all related to a common ancestor. There are three triangulated DNA segments that we have been able to identify by chromosome number and segment start/stop position that triangulate with descendants of the Andrew Harwood line and descendants of more than one son of John and Huldah Jacobs (isolating the source to John or Huldah). These DNA segments are the Chr#14 segment I've previously written about, plus segments from Chr#5 and Chr#20. This link shows two tables:
1) Top table: the matches that we have to each of these triangulated segments (color coded) and the Harwood lines they descend from.
2) Bottom table: the Jacobs matches associated with each triangulated segment.
No triangulated DNA segments have been found with descendants of the Concord or Salem lines. Though the Chr#14 line has Concord-line Harwoods in the tree, there is no evidence that they sourced the segment. In the cases above, multiple lines carrying the segment converging on a common Harwood ancestor descended from James Harwood, b.1695, whose wife was Lydia (MNU - "maiden name unknown").
There is a fourth segment listed for which no chromosome or segment data has yet become available. Triangulation is suggested by ProTools data showing the same set of matches shared at about the same cM value (~ 20cM) with mockvet, a descendant of Annis Harwood, daughter of Archibald Harwood (son of James and Lydia (MNU). We hope to gain the cooperation of one of the matches so that we can identify the segment and prove that it triangulates. It would also bolster the case for this segment if another Harwood match were to be found that traced to Annis Harwood via a different child.
This data is the centerpiece of the case for Huldah Harwood being a descendant of the Andrew Harwood line.
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