Proof of our descent from Blennerhassett - DNA matches
The page
Proof of our descent from Blennerhassett
explains that our family has multiple DNA matches with the Blennerhassett Baronets family.
The details of all these DNA matches have been moved
to this page.
Discussion of what they mean are on the Proof page.
Our family has a DNA match with the family of
Arthur Blennerhassett of Blennerville
(born 1776),
son of Sir Rowland Blennerhassett, 1st Baronet.
John Chute
15 cM match between our family and the Blennerhassett Baronets family.
The match is between these two people:
The common ancestor of
Meg Niemi and the other people on this page would be
George Cashel and his wife.
As shown here,
any link to Blennerhassett/Yielding through George Cashel and his wife is realistically a
link only through George Cashel.
I call it as proved that Arthur Blennerhassett of Blennerville
is related to our family through George Cashel and not through any other line.
Our family has a DNA match with the family of
Sir Robert Blennerhassett, 2nd Baronet
(born 1769),
son of the 1st Baronet.
Sir Adrian Blennerhassett, 7th Baronet
We have a match between:
and two people in my family:
DNA match of Sir Adrian Blennerhassett, 7th Baronet, with Nuala Duggan,
as seen on Gedmatch.
DNA match of Sir Adrian Blennerhassett, 7th Baronet,
with Nuala Duggan, as seen on Ancestry.
DNA match of Sir Adrian Blennerhassett, 7th Baronet, with Kathrin Riordan,
as seen on Gedmatch.
-
Note this is the same location as the 7th Baronet's match with Nuala Duggan. It is the same match.
-
This means the link of Kathrin and Nuala to the 7th Baronet
is through the common ancestor of Kathrin and Nuala,
which is
Blennerhassett Cashel (bapt 1848) and his wife.
-
More on this in Triangulation below.
-
As shown here,
any link to Blennerhassett/Yielding through Blennerhassett Cashel is realistically a
link through George Cashel.
I call it as proved that Sir Robert Blennerhassett, 2nd Baronet,
is related to our family through George Cashel and not through any other line.
Paul Warwick (borderline match)
Ancestry also gives a
borderline match between one of the 2nd Baronet's descendants
and my family.
A match between these two people:
The match with the Conyers family
(descendants of the 2nd Baronet)
as seen on Ancestry.
While Ancestry says this is a match, because it is only 8 cM
we will not count it in this proof.
There are further DNA matches of our family with Yielding, the family of the wife
and the mother of the 1st Baronet.
First, we have matches with
William Yielding (born 1750-51),
brother of
Millicent Agnes Yielding
(wife of 1st Baronet).
As it happens,
all of these people
also have Blennerhassett descents.
They also descend from siblings of the 1st Baronet.
Not every descendant of William Yielding
descends from a sibling of the 1st Baronet.
But these ones do.
Eileen Owen
On 3 June 2021, I got a
14 cM DNA match with
Eileen Owen.
She
is a descendant of
all of these people:
And she is a DNA match with this person in my family:
DNA match of Eileen Owen and James Riordan, as seen on Gedmatch.
Brenda Bayly
And we have further William Yielding matches with
Brenda Bayly.
She
is a descendant of
both of these people:
And she is a DNA match with these three people in my family:
The William Yielding matches must be through George Cashel
The most recent common ancestor of
the McGraths and
Nuala Duggan is
Blennerhassett Cashel
(they descend from two different wives).
As shown here,
any link to Blennerhassett/Yielding through Blennerhassett Cashel is realistically a
link through George Cashel.
I call it as proved that William Yielding
is related to our family through George Cashel and not through any other line.
We also have DNA matches
of my family
with
Belinda Yielding (bapt 1758),
sister of Millicent Agnes Yielding
(wife of 1st Baronet).
It is proved that these are matches with Belinda Yielding:
- Belinda Yielding married
Whitwell Butler
and had Butler descendants.
- My family has DNA matches with the
Thomas Butler of Belville family
and the
Tobias Butler family.
- The connection of these two families to Whitwell Butler was uncertain.
But after very strong DNA results, plus other work, we proved that both Butler families
must descend somehow from the marriage of Whitwell Butler and Belinda Yielding.
For the proof see the above two links.
- Therefore the match of my family to these Butlers
is evidence connecting us to Millicent Agnes Yielding
(wife of 1st Baronet).
We have the following matches with descendants of Belinda Yielding.
Billy Butler
We have matches between:
and these four people in my family:
DNA match of Billy Butler and Frank McGrath, as seen on Gedmatch.
DNA match of Billy Butler and Niall Humphreys, as seen on Gedmatch.
Note this is the same segment as above.
It ends at the same location.
DNA match of Billy Butler and Donal Duggan, as seen on Gedmatch.
Again it is the same segment.
DNA match of Billy Butler and John Lavelle, as seen on Gedmatch.
Again it is the same segment.
More on this in Triangulation below.
Terrence Donahoe
We have matches between:
and these four people in my family:
Kevin Dyke
We have matches between:
and these two people in my family:
Isolde Somers
We have
matches between:
and these two people in my family:
The match of Isolde Somers and Niall Humphreys
as seen on Gedmatch (magnified from default).
The match of Isolde Somers and Frank McGrath
as seen on Gedmatch.
Vincent Butler
We have a
match between these two people:
The match of Vincent Butler and
Desmond Conacher
as seen on Gedmatch.
Jasmine McClain (borderline match)
We have a borderline match between these two people:
While Ancestry says this is a match, because it is only 6 cM
we will not count it in this proof.
The Belinda Yielding matches must be through George Cashel
The common ancestor of the Cashel people in these matches is
Blennerhassett Cashel
(they descend from two different wives).
As shown here,
any link to Blennerhassett/Yielding through Blennerhassett Cashel is realistically a
link through George Cashel.
I call it as proved that the Thomas Butler and Tobias Butler families
are related to our family through George Cashel and not through any other line.
So
I call it as proved that Belinda Yielding
is related to our family through George Cashel and not through any other line.
We can go further with the DNA results
if we can look at the
actual DNA segments.
Triangulation
can then allow us see if the segment match is through the Blennerhassett/Yielding/Cashel line
or through some other line.
-
We need a site like Gedmatch to see the segments and do the triangulation.
-
Not everyone here is on Gedmatch.
- We have searched every DNA match here that is on Gedmatch,
looking to either prove or disprove that the connection is through the Blennerhassett/Yielding/Cashel line.
- Disproved matches:
- We actually disproved some matches using triangulation.
There are some
matches of Butler with our family
that we have deleted from this page.
Why? Because
triangulation proved they are
not through the Cashel line.
So they are irrelevant.
- Proved matches:
- We proved using triangulation that some matches of our family with the Baronets family
are through the Cashel line.
See the following.
The 7th Baronet matches two people in our family at the same location.
Two people inside our family:
DNA match of Nuala Duggan
and Kathrin Riordan
on Chromosome 19.
They are known relations so this is no surprise.
DNA match of Sir Adrian Blennerhassett, 7th Baronet
and Nuala Duggan
on Chromosome 19.
DNA match of Sir Adrian Blennerhassett, 7th Baronet
and Kathrin Riordan
on Chromosome 19.
- This is the same segment.
-
The 7th Baronet must be related to Nuala and Kathrin through their common ancestors,
Blennerhassett Cashel and his wife.
-
As shown here,
any link to Blennerhassett through Blennerhassett Cashel is realistically a
link through George Cashel.
I call it as proved that Sir Adrian Blennerhassett, 7th Baronet,
is related to our family through George Cashel and not through any other line.
Billy Butler matches four people in our family at the same location.
Again we can look at the actual DNA segments.
We have DNA matches between:
and these four people in my family:
The DNA matches are at the same location
on Chromosome 5.
Let us triangulate everyone with everyone.
We will find that everyone matches everyone at positions
31,997,869 to 38,728,218.
Three 1st cousins
These three are 1st cousins of each other.
So they have lots of matches.
All of these match at positions
31,997,869 to 38,728,218.
DNA match of
Donal Duggan
and
Niall Humphreys
on Chromosome 5.
DNA match of Donal Duggan
and John Lavelle
on Chromosome 5.
DNA match of
John Lavelle
and Niall Humphreys
on Chromosome 5.
Frank McGrath
Frank McGrath is separate to the
three 1st cousins, but still very closely related.
All of these match at positions
31,997,869 to 38,728,218.
DNA match of
Frank McGrath
and
Niall Humphreys
on Chromosome 5.
DNA match of Frank McGrath
and Donal Duggan
on Chromosome 5.
DNA match of Frank McGrath
and John Lavelle
on Chromosome 5.
Billy Butler
Billy Butler matches the four people above.
All of these match at positions
31,997,869 to 38,728,218.
DNA match of
Billy Butler
and
Frank McGrath
on Chromosome 5.
DNA match of Billy Butler
and Niall Humphreys
on Chromosome 5.
DNA match of Billy Butler
and Donal Duggan
on Chromosome 5.
DNA match of Billy Butler
and John Lavelle
on Chromosome 5.
-
This is the same segment.
Note even the same start and end locations.
-
Billy Butler must be related to us through the common ancestor of these people,
which is
Blennerhassett Cashel
(they descend from two different wives).
-
As shown here,
any link to Blennerhassett / Butler of Co.Kerry
through Blennerhassett Cashel is realistically a
link through George Cashel.
I call it as proved that Billy Butler
is related to our family through George Cashel and not through any other line.
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