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What is my dad's first cousin once removed to me?

Your dad's first cousin once removed can be your first cousin twice removed (if they are the older generation, a parent's cousin) or your second cousin (if they are the younger generation, a cousin's child). It depends on which branch of the family you mean.

Diagram: how your father's cousin once removed is related to youYouFatherGrandparentGreat-grandparentGreat-great-grandparentscommon ancestorsGreat-great-aunt/uncleFirst cousin twiceremovedthem
If they are your first cousin twice removed
Diagram: how your father's cousin once removed is related to youYouFatherGrandparentGreat-grandparentscommon ancestorsGreat-aunt/uncleFirst cousin onceremovedSecond cousinthem
If they are your second cousin

you them common ancestors double line: marriage

“First cousin once removed” works in both directions, so this can be one of two people. If they're older (your dad's parent's cousin), they're your first cousin twice removed. If they're younger (your dad's cousin's child), they're your second cousin.

Quick check: are they closer to your grandparents' age or to yours?

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 cousin once removed: first cousin twice removed or second cousin

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    Related questions

    What is my dad's cousin's child to me?
    Your second cousin.
    What is my dad's second cousin to me?
    Your second cousin once removed.

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