O | P | GP | GGP | 3GP | 4GP | 5GP |
---|---|---|---|---|---|---|
P | S | N | GN | 2GN | 3GN | 4GN |
GP | N | 1C | 1C 1R | 1C 2R | 1C 3R | 1C 4R |
GGP | GN | 1C 1R | 2C | 2C 1R | 2C 2R | 2C 3R |
3GP | 2GN | 1C 2R | 2C 1R | 3C | 3C 1R | 3C 2R |
4GP | 3GN | 1C 3R | 2C 2R | 3C 1R | 4C | 4C 1R |
5GP | 4GN | 1C 4R | 2C 3R | 3C 2R | 4C 1R | 5C |
C = Cousin P = Parents G = Great/Grand N = Nephew/Niece O = Original Ancestors R = Removed S = Sibling (brother or sister) |
Examples: 1C = First Cousin GGP = Great Grand Parents 2C1R = Second Cousin, Once Removed GN = Grand Nephew/Niece 3GP = Great Great Grand Parents 5GP = Great Great Great Great Grand Parents
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If my Grandparents (GP) are also your Grandparents (GP), then you and I are first cousins (1C).
My Great Grand Mother's brother is my Great Grand Uncle, so I'm his GGN, because our Original Ancestors are their Parents (P), and are also my Great Great Grand Parents (GGGP).
In reverse, if someone is your third cousin (3C), it means that you both share the same great-great-grandparents (3GP).
STEP - Not blood kin, but a close legal relationship due to re-marriage of a parent, such as step-mother, step-brother, step-son, etc.
DOUBLE FIRST COUSINS - Are first cousins twice, once on their Father's side and once on their Mother's side, since their Father's sibling married their Mother's sibling.
IN-LAW - They are not really blood kin but are treated as such because they married blood kin.
Example: Your Mother-in-law is not really your Mother but is treated as such because you married her daughter/son.
Also your brother-in-law is your brother because your parents are also his parents "in-law" (Mother-in-law, Father-in-law).
KITH and KIN - "Kith" are friends and acquaintances whereas "Kin" are blood relatives or someone treated as such in-law.