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Relationship Chart

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The chart below shows you how to determine the relationship between two people who have a common ancestor. If they do not have at least one ancestor in common, then they are not related. In the chart the common ancestor is box 1 on the horizontal scale as well as box 1 on the vertical scale.

Let us suppose that you have a grandson of that common ancestor, as seen in box 3 of the horizontal scale, and you want to know that grandson's relationship to a great great granddaughter, who would be seen in box 5 on the vertical scale.

If you follow box 5 (vertical scale) down to where it meets the vertical pathway to box 3 on the horizontal scale, then where those paths cross, it tells you the relationship -- they are first cousins twice removed.

The chart shows the details for an ancestor up to nine generations earlier than the people concerned, but the same principle can be carried back as far as you like, provided you ahve the necessary information.

1
2
3
4
5
6
7
8
9
10
1
Common Ancestor
Son or Daughter
Grandson or Daughter
Great Grandson or Daughter
Great Great Grandson or Daughter
Great Great Great Grandson or Daughter
Great Great Great Great Grandson or Daughter
Great Great Great Great Great Grandson or Daughter
Great Great Great Great Great Great Grandson or Daughter
Great Great Great Great Great Great Great Grandson or Daughter
2
Son or Daughter
Siblings (Brother or Sister)
Nephew or Niece
Grand Nephew or Niece
Great Grand Nephew or Niece
Great Great Grand Nephew or Niece
Great Great Great Grand Nephew or Niece
Great Great Great Great Grand Nephew or Niece
Great Great Great Great Great Grand Nephew or Niece
Great Great Great Great Great Great Grand Nephew or Niece
3
Grandson or Daughter
Nephew or Niece
First Cousins
First Cousins Once Removed
First Cousins Twice Removed
First Cousins Three Times Removed
First Cousins Four Times Removed
First Cousins Five Times Removed
First Cousins Six Times Removed
First Cousins Seven Times Removed
4
Great Grandson or Daughter
Grand Nephew or Niece
First Cousins Once Removed
Second Cousins
Second Cousins Once Removed
Second Cousins Twice Removed
Second Cousins Three Times Removed
Second Cousins Four Times Removed
Second Cousins Five Times Removed
Second Cousins Six Times Removed
5
Great Great Grandson or Daughter
Great Grand Nephew or Niece
First Cousins Twice Removed
Second Cousins Once Removed
Third Cousins
Third Cousins Once Removed
Third Cousins Twice Removed
Third Cousins Three Times Removed
Third Cousins Four Times Removed
Second Cousins Five Times Removed
6
Great Great Great Grandson or Daughter
Great Great Grand Nephew or Niece
First Cousins Three Times Removed
Second Cousins Twice Removed
Third Cousins Once Removed
Fourth Cousins
Fourth Cousins Once Removed
Fourth Cousins Twice Removed
Fourth Cousins Three Times Removed
Fourth Cousins Four Times Removed
7
Great Great Great Great Grandson or Daughter
Great Great Great Grand Nephew or Niece
First Cousins Four Times Removed
Second Cousins Three Times Removed
Third Cousins Twice Removed
Fourth Cousins Once Removed
Fifth Cousins
Fifth Cousins Once Removed
Fifth Cousins Twice Removed
Fifth Cousins Three Times Removed
8
Great Great Great Great Great Grandson or Daughter
Great Great Great Great Grand Nephew or Niece
First Cousins Five Times Removed
Second Cousins Four Times Removed
Third Cousins Three Times Removed
Fourth Cousins Twice Removed
Fifth Cousins Once Removed
Sixth Cousins
Sixth Cousins Once Removed
Sixth Cousins Twice Removed
9
Great Great Great Great Great Great Grandson or Daughter
Great Great Great Great Great Grand Nephew or Niece
First Cousins Six Times Removed
Second Cousins Five Times Removed
Third Cousins Four Times Removed
Fourth Cousins Three Times Removed
Fifth Cousins Twice Removed
Sixth Cousins Once Removed
Seventh Cousins
Seventh Cousins Once Removed
10
Great Great Great Great Great Great Great Grandson or Daughter
Great Great Great Great Great Great Grand Nephew or Niece
First Cousins Seven Times Removed
Second Cousins Six Times Removed
Third Cousins Five Times Removed
Fourth Cousins Four Times Removed
Fifth Cousins Three Times Removed
Sixth Cousins Twice Removed
Seventh Cousins Once Removed
Eighth Cousins


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