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Thomas Blair & Margaret ________
Thomas Blair & Margaret Hussey

Conventional Research
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 Blair and Margaret _____ through son James Blair and Jean. A third participant, #13050, traces his line back to Thomas Blair and Margaret Hussey.

DNA Testing
Participants #5502 and #8466 match 25 for 25 on their DNA test results. Participant #13050 mismatches #5502 on 9 of 25 markers, and mismatches #8466 on 16 of 37 markers.

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

Marker 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37
  DYS#
PART
ID#
3
9
3
3
9
0
1
9
*
3
9
1
3
8
5
a
3
8
5
b
4
2
6
4
3
8
4
3
9
3
8
9
i
3
9
2
3
8
9
ii
4
5
8
4
5
9
a
4
5
9
b
4
5
5
4
5
4
4
4
7
4
3
7
4
4
8
4
4
9
4
6
4
a
4
6
4
b
4
6
4
c
4
6
4
d
4
6
0
G
A
T
A
H
4
Y
C
A
II
a
Y
C
A
II
b
4
5
6
4
0
7
5
7
6
5
7
0
C
D
Y

a
C
D
Y

b
4
4
2
4
3
8
5502 13 24 14 11 11 14 12 12 13 13 13 29 16 9 10 11 11 25 15 19 27 16 16 17 18
8466 13 24 14 11 11 14 12 12 13 13 13 29 16 9 10 11 11 25 15 19 27 16 16 17 18 11 11 19 23 15 15 19 16 36 37 11 13
13050 12 24 14 11 11 15 12 12 12 13 13 29 15 10 10 11 11 26 15 19 30 14 15 17 18 11 11 19 23 15 16 18 17 35 39 12 12

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

bsgr304

Conclusions
DNA test results support the conventional research that #5502 and #8466 share the common ancestor James Blair. The results also clearly indicate that participant #13050 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 (who married Marageret Hussey) ARE both sons of Thomas Blair and Margaret _____, but #13050 does NOT descend from Thomas Blair and Margaret Hussey. To test this scenario we would need another participant who descends from Thomas and Margaret Hussey, preferable through a son other than William.
2. James and Thomas (who married Marageret Hussey) are NOT both sons of Thomas and Margaret _____. To determine which of the two is actually Thomas' son we will need to test someone who descends from Thomas and Margaret _____ through one of his other sons (William or John).

This WebPage was last updated 04/05/2015

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