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What is my dad's niece to me?

Your dad's niece is your first cousin, and you are her first cousin too.

12.5% shared DNA on average. Real amounts vary.

Diagram: how your father's niece is related to youYouFatherGrandparentscommon ancestorsAunt/uncleFirst cousinthem

you them common ancestors double line: marriage

Your dad's niece is the daughter of your dad's brother or sister, which makes her your first cousin.

If she's his niece through your mom (your mom's sibling's daughter), she's still your first cousin. If she's a stepmother's niece, she isn't a blood relative.

How we worked it out

Follow the chain one step at a time:

  1. Your father: father (1 up, 0 down)
  2. Your father's niece: first cousin (2 up, 2 down)

Your grandparents are her grandparents: they are your common ancestors.

Same generation as you.

Count the generations to your common ancestors: 2 up from you, 2 down to her. The cousin number is one less than the smaller count (2), so first cousin. The counts are the same, so not removed.

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    Related questions

    What is my mom's nephew to me?
    Your first cousin.
    What is my dad's niece's child to me?
    Your first cousin once removed.

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