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What are my cousin's kids to my kids?

To your kids, your cousin's kids are their second cousins. To you, they are your first cousins once removed.

Diagram from the other relative's point of viewYour childpoint of viewYouGrandparentGreat-grandparentscommon ancestorsGreat-aunt/uncleFirst cousin onceremovedSecond cousinthem
From your child's point of view

you them common ancestors double line: marriage

Your kids and your cousin's kids are the same generation and share great-grandparents (your grandparents). That makes them second cousins.

To you, your cousin's kids are first cousins once removed. To your kids, they are second cousins. Both are true; the diagram shows the path from your child.

How we worked it out

Follow the chain one step at a time:

  1. Your cousin: first cousin (2 up, 2 down)
  2. Your cousin's child: first cousin once removed (2 up, 3 down)
  3. Seen from your child: second cousin

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    Related questions

    Are my kids and my cousin's kids first cousins?
    No. First cousins share grandparents. Your kids and your cousin's kids share great-grandparents, so they are second cousins.
    How much DNA do second cousins share?
    About 3.1% (1/32) on average. The real amount varies a lot.

    More family relationship answers