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General => Ancestral Family Tree DNA Testing => Topic started by: LizzieL on Thursday 16 July 20 10:33 BST (UK)
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I have a match at 10 cM with CM (full name given on Ancestry). Ancestry has flagged it up as a Common Ancestor match. CM's surname is the same as one of my direct ancestors which I have researched reasonably well, so it was clear to see where our trees overlapped and confirm that he was my 5th cousin once removed. Our common ancestors were my 4 x great grandparents (and his 5 x great grandparents). CM manages the test for EM. My match with EM is at the same level and the tree attached to EM's results is the identical tree attached to CM's results, same size, same name, same home person. In fact if the tree was just called "M... family tree" instead of "CM's family tree", I wouldn't know which of the two people was the home person.
Both EM and CM appear on the tree (obviously as private). EM is CM's son, so he would be my 5th cousin 2 x removed
But I don't have a common ancestor match with EM according to Ancestry. Can anyone suggest why this should be?
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Perhaps your shared cMs with EM are less than 6cM * so Ancestry won't show it.
* soon to be less than 8cM.
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Both EM and CM appear on the tree (obviously as private). EM is CM's son, so he would be my 5th cousin 2 x removed
But I don't have a common ancestor match with EM according to Ancestry. Can anyone suggest why this should be?
If EM is CM's son and you share only 10cMs with CM, it is quite likely that EM and you share less than 6cMs, as Fleming has said.
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Perhaps your shared cMs with EM are less than 6cM * so Ancestry won't show it.
* soon to be less than 8cM.
As I said in my post my shared DNA with EM is at the same level as CM - ie 10 cM. I am showing a match with EM but it is not flagging up as a Common Ancestor as it is with CM, despite the identical tree being linked to both people. This made me think at first they were brothers but further research showed they were father and son.
Currently Common Ancestors will work for levels down to 6cM - I have several at that level and 7cM which I have verified.
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Do they both appear in ThruLines?
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No, only CM. But doesn't that use the same matching process? If I click on common ancestor or on thrulines I get the same suggested relationship pathways and set of Ancestry trees to look at.
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It's very odd if they share the same cMs and have the same tree. I wonder if it's because they share the same tree :-\
I think iIve got a few with shared trees but with higher cMs - I'll go and look.
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I don't usually look at thrulines, but since I last looked at, I've been given a lot of invented green ancestors.
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Something odd - I think I've discovered something similar.
I've looked at two shared matches. The daughter manages her father's info. Only she comes up in Common Ancestors and ThruLines although other matches in the same line are there. Her tree is linked but his, although the same, is an unlinked one :-\
Add - ThruLines accesed via the Common Ancestors option
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..and another one that she manages in which the tree is linked comes up as a Common Ancestor. Maybe it's something to do with linked* trees ???
* and unlinked
Add - I knew how this group were related to me and each other without looking at Common Ancestors :)
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I went to thrulines from the main DNA sign in page. It gives each generation as a pink or blue icon (depending on gender) If you hover over each it says if there is a thruline associated and if you click, it shows up, the same as it would if I click common ancestor. As I haven't got as far back with some branches as others and there is some illegitimacy, not every generation of mine has a full set of ancestors, but now some potential ones in green have appeared to try to complete the set. One pair is right, just not updated my tree on Ancestry, one is impossible (unless my 3 x great grandfather fathered a child at age 6), but another pair are worth further investigation.
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I didn't mean the ThruLines via top right link. I meant going to your Common Ancestors listing, selecting the relevant match, then clicking on the left hand link that says View Relationship which is under an ancestor. This takes you to a suggested relationship tree which then allows you to click on View Thrulines. This then displays al l the relatives that Ancestry sugests link to the common ancestor.
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If both father and son are the same 'home' person on the linked tree than the system most likely can only handle one of them, other wise it would have to put a home person as a Common Ancestor twice.
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I have a match at 10 cM with CM (full name given on Ancestry). Ancestry has flagged it up as a Common Ancestor match. CM's surname is the same as one of my direct ancestors which I have researched reasonably well, so it was clear to see where our trees overlapped and confirm that he was my 5th cousin once removed. Our common ancestors were my 4 x great grandparents (and his 5 x great grandparents). CM manages the test for EM. My match with EM is at the same level and the tree attached to EM's results is the identical tree attached to CM's results, same size, same name, same home person. In fact if the tree was just called "M... family tree" instead of "CM's family tree", I wouldn't know which of the two people was the home person.
Both EM and CM appear on the tree (obviously as private). EM is CM's son, so he would be my 5th cousin 2 x removed
But I don't have a common ancestor match with EM according to Ancestry. Can anyone suggest why this should be?
Common Ancestors and ThruLines only show matches up to your 5x great grandparents. If you have a match that is 5C2R it won't show in Common Ancestors or ThruLines because it is too many generations.
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I have a match at 10 cM with CM (full name given on Ancestry). Ancestry has flagged it up as a Common Ancestor match. CM's surname is the same as one of my direct ancestors which I have researched reasonably well, so it was clear to see where our trees overlapped and confirm that he was my 5th cousin once removed. Our common ancestors were my 4 x great grandparents (and his 5 x great grandparents). CM manages the test for EM. My match with EM is at the same level and the tree attached to EM's results is the identical tree attached to CM's results, same size, same name, same home person. In fact if the tree was just called "M... family tree" instead of "CM's family tree", I wouldn't know which of the two people was the home person.
Both EM and CM appear on the tree (obviously as private). EM is CM's son, so he would be my 5th cousin 2 x removed
But I don't have a common ancestor match with EM according to Ancestry. Can anyone suggest why this should be?
Common Ancestors and ThruLines only show matches up to your 5x great grandparents. If you have a match that is 5C2R it won't show in Common Ancestors or ThruLines because it is too many generations.
CM is my 5C1R - our shared ancestors are my 4 x great grandparents. CM's son is my 5C2R. Our shared ancestors are still my 4 x great grandparents. The number of generations on my side hasn't changed at all.
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But your 4x great grandparents would be your 5C2Rs 6x great grandparents.
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Yes, of course, so cousins descended from my 5 x great grandparents only show if they are also their 5 x great (or lower number of greats) grandparents. That's a nuisance, I'm descended from a much younger sibling at several points on my tree, so many distant cousins who are my age contemporaries or even older are a removed down.
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Yes it is a nuisance. I have a few in exactly the same situation as you.
Gail
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Common Ancestors and ThruLines only show matches up to your 5x great grandparents. If you have a match that is 5C2R it won't show in Common Ancestors or ThruLines because it is too many generations.
Matches that are descended from 5th greats would likely be 6th cousins not 5th.
I've just checked my listings and I have matches that are between 5C1R and the last ones are 6th cousins.
PS - I've even got a half 5C on the list (so they say)
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I've got 2 x half 6th cousins on common ancestor list. But they'll go when we lose the 6 and 7 cM matches.
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Colour code them, Lizzie.Maybe have a colour category for distant common ancestor matches or some such.
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Colour code them, Lizzie.Maybe have a colour category for distant common ancestor matches or some such.
Yes I'm doing that, but so many before the beginning of August
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;D ;D ;D
I was referring to your previous message not the whole lot
I've got 2 x half 6th cousins on common ancestor list. But they'll go when we lose the 6 and 7 cM matches.
I've always colour coded those that Ancestry say share common ancestors
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Common Ancestors and ThruLines only show matches up to your 5x great grandparents. If you have a match that is 5C2R it won't show in Common Ancestors or ThruLines because it is too many generations.
Matches that are descended from 5th greats would likely be 6th cousins not 5th.
I've just checked my listings and I have matches that are between 5C1R and the last ones are 6th cousins.
PS - I've even got a half 5C on the list (so they say)
If a match is the same generation as you then the most distant relationship would be sixth cousins. My post didn't mention 5th or 6th cousins, I said matches only go as far as 5th great grandparents.
I have a 5x great grandfather who I share with 16 matches but there only two are 6th cousins, the rest are more closely related.
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And if the common ancestor is a 5th great then the direct relationship is a 6th cousin.
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And if the common ancestor is a 5th great then the direct relationship is a 6th cousin.
Yes, as stated in my previous post "If a match is the same generation as you then the most distant relationship would be sixth cousins".