HOW ARE WE RELATED? CALCULATING COUSINHOOD
1. Identify the most recent ancestor the two relatives share and how that ancestor is related to both individuals. 2. In the top row, locate the relationship of the 1st person to the common ancestor. 3. In the first column, locate the relationship of the 2nd person to the common ancestor. 4. The type of cousins they are is where the row and column intersect.
Common Great- 2nd Great- 3rd Great- 4th Great- 5th Great- Parent Grandparent Ancestor Grandparent Grandparent Grandparent Grandparent Grandparent
2nd Great- 3rd Great- Grand Great-Grand 4th Great-Grand Parent Sibling Niece/Nephew Grand Grand Niece/Nephew Niece/Nephew Niece/Nephew Niece/Nephew Niece/Nephew First First Cousin First Cousin First Cousin First Cousin First Cousin Grandparent Niece/Nephew Cousin Once Removed 2x Removed 3x Removed 4x Removed 5x Removed
Great- Grand First Cousin Second Second Cousin Second Cousin Second Cousin Second Cousin Grandparent Niece/Nephew Once Removed Cousin Once Removed 2x Removed 3x Removed 4x Removed
2nd Great- Great-Grand First Cousin Second Cousin Third Third Cousin Third Cousin Third Cousin Grandparent Niece/Nephew 2x Removed Once Removed Cousin Once Removed 2x Removed 3x Removed
2nd Great- 3rd Great- First Cousin Second Cousin Third Cousin Fourth Fourth Cousin Fourth Cousin Grand Grandparent 3x Removed 2x Removed Once Removed Cousin Once Removed 2x Removed Niece/Nephew 3rd Great- 4th Great- First Cousin Second Cousin Third Cousin Fourth Cousin Fifth Fifth Cousin Grand Grandparent 4x Removed 3x Removed 2x Removed Once Removed Cousin Once Removed Niece/Nephew
5th Great- 4th Great-Grand First Cousin Second Cousin Third Cousin Fourth Cousin Fifth Cousin Sixth Grandparent Niece/Nephew 5x Removed 4x Removed 2x Removed 2x Removed Once Removed Cousin
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