Thomas Blair & Margaret ________
Thomas Blair & Margaret Hussey

It is believed by many that Thomas Blair (m. Margaret Hussey) is a descendant of Thomas Blair and Margaret _____ . It is my understanding that this connection is very speculative at best and that there is no hard evidence to prove this connection. Two participants (#5502 and #8466) trace their ancestry back to Thomas and Margaret through James Blair and Jean. A third participant, #13050, traces his line back to Thomas Blair and Margaret Hussey.

Participants #5502 and #8466 match 25 for 25 on their DNA test results confirming they share the common ancestor James Blair.  Participant #13050 mismatches #5502 and #8466 on nine markers, clearly indicating that he and the other two participants cannot share the common ancestor Thomas Blair. Although it is impossible to draw a firm conclusion based on the test results of only one descendant of Thomas Blair and Margaret Hussey, the results, coupled with the speculative paper trail, do add support to the premise that Thomas who married Margaret Hussey is not a descendant of Thomas Blair and Margaret _____ .

The DNA test results (on their own) indicate a couple of possible scenarios.
1. James and Thomas ARE both sons of Thomas, but 13050 does NOT descend from Thomas. To test this scenario we would need another participant who descends from Thomas, preferable through a son other than William.
2. James and Thomas are NOT both sons of Thomas. To determine which of the two is actually Thomas' son we will need to test someone who descends from Thomas through one of his other sons (William or John).

The actual marker values for each participant are shown in the table below.

The diagram below show the pedigrees of the three participants based on conventional research.

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