How do first and second cousins work




















Expand search. Search Search. Sign In Account Management. Family Trees. Information Article Body. Cousins First cousins share a set of grandparents. Removed In cousin relationships, the term removed indicates the separation of a generation. Use our cousin chart to settle the debate once and for all! Cousins are people who share a common ancestor that is at least 2 generations away, such as a grandparent or great-grandparent.

You and your siblings are not cousins because your parents are only 1 generation away from you. Download Cousin Chart. The number associated with your cousin has to do with how many generations away your common ancestor is. For example:. However, keep in mind that this trick only works if you are both the same number of generations removed from the common ancestor.

Second cousins share a great-grandparent, either maternal or paternal. You and your second cousins have the same great-grandparents, but not the same grandparents. Understanding second cousins is much the same as understanding first cousins, except the family tree must go back one further generation. If members of your family were adopted, your second cousins may not be blood related to you. With this hypothetical example, you and Ashley are second cousins.

This is because the closest common ancestor that you share is your great-grandma. Ashley's grandpa, your great-uncle, is your grandma's brother. In addition to the distinction between first cousins and second cousins, there is also the added designation of being "once removed. This could be one generation above yours or one generation below yours. Since you and your first cousins, by definition, are all from the same generation, you wouldn't use the term "once removed" for your true first cousin relationships.

You would, however, use the term "first cousin once removed" to describe your relationship to your parents' first cousins. You could also explore the family tree in the other direction and your first cousin's child would be your first cousin, once removed.

To find a second cousin, once removed, use the same logic. Your mom or dad's second cousin would be someone they share great-grandparents with. Your mom's second cousin or your dad's second cousin would be your second cousin, once removed because your parents are one generation older than you. If you move down a generation, your second cousin's child would be your second cousin, once removed. Since "removed" denotes the number of generations between you and a relative, "twice removed" means there are two generations separating you and your cousin.

This could mean two generations above you or two generations below you. Since you and your first cousins are from the same generation, you wouldn't use the term "twice removed" to describe them. You would use the term "first cousin, twice removed" to describe your relationship to your grandparent's first cousins or to the grandchildren of your true first cousins.

Using the same First Cousin Twice Removed chart, you can extrapolate the family tree to see that if your great-great-grandma had a sister, her daughter's daughter would be your grandma's second cousin and your second cousin, twice removed. Alternatively, your second cousin's grandchild would be your second cousin, twice removed if you went down the family tree. If these distinctions aren't confusing enough, first cousins can be further parsed into parallel and cross cousins.

Parallel cousins are the children of same-sex siblings — for example, the children of your mother's sister are your parallel cousins. Cross cousins are the offspring of opposite sex siblings, such as your mother's brother's children, or your father's sister's children.

And in case you were wondering, the two relatives at the family reunion A's mother's aunt is B's father's grandmother are second cousins once removed.



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