Cousin Chart

This chart can help you determine familial relationships.

Chart Instructions

  • The box marked CA on the chart in the upper left-hand corner is the common ancestor of two people.
  • Identify the relationship of the first person to the common ancestor, e.g., child, grandchild, 8th great grandchild, etc. Find that box on the top row.
  • Identify the relationship of the second person to the common ancestor, e.g., grandchild, great grandchild, 3rd great grandchild, etc. Find that box in the left-hand column.
  • Follow the column straight down from the top row and follow the row straight across from the left-hand column. The relationship of the second person to the first person will be the box where the two lines meet.

Chart Abbreviations Used:

CA Common Ancestor
C Child
S Sibling (Brother/Sister)
N Niece/Nephew
GC Grandchild
GGC Great Grandchild
GN Grand Niece/Nephew
GGN Great Grand Niece/Nephew
#C Cousin Relationship, e.g., 1C = First Cousin, etc.
#R # of times removed, e.g., 4R = 4 times removed, etc.

  0 1 2 3 4 5 6 7 8 9 10
0 CA C GC GGC 2 GGC 3 GGC 4 GGC 5 GGC 6 GGC 7 GGC 8 GGC
1 C S N GN GGN 2 GGN 3 GGN 4 GGN 5 GGN 6 GGN 7 GGN
2 GC N 1C 1C 1R 1C 2R 1C 3R 1C 4R 1C 5R 1C 6R 1C 7R 1C 8R
3 GGC GN 1C 1R 2C 2C 1R 2C 2R 2C 3R 2C 4R 2C 5R 2C 6R 2C 7R
4 2 GGC GGN 1C 2R 2C 1R 3C 3C 1R 3C 2R 3C 3R 3C 4R 3C 5R 3C 6R
5 3 GGC 2 GGN 1C 3R 2C 2R 3C 1R 4C 4C 1R 4C 2R 4C 3R 4C 4R 4C 5R
6 4 GGC 3 GGN 1C 4R 2C 3R 3C 2R 4C 1R 5C 5C 1R 5C 2R 5C 3R 5C 4R
7 5 GGC 4 GGN 1C 5R 2C 4R 3C 3R 4C 2R 5C 1R 6C 6C 1R 6C 2R 6C 3R
8 6 GGC 5 GGN 1C 6R 2C 5R 3C 4R 4C 3R 5C 2R 6C 1R 7C 7C 1R 7C 2R
9 7 GGC 6 GGN 1C 7R 2C 6R 3C 5R 4C 4R 5C 3R 6C 2R 7C 1R 8C 8C 1R
10 8 GGC 7 GGN 1C 8R 2C 7R 3C 6R 4C 5R 5C 4R 6C 3R 7C 2R 8C 1R 9C