What is my cousin's wife to me?
Your cousin's wife is your first cousin by marriage — 'cousin-in-law' in everyday speech. She shares no ancestor with you; she simply married into your cousin's generation. Children she has with your cousin, though, are your first cousins once removed, by blood.
Relationship
First cousin by marriage
English has no single formal word for this relative — “first cousin by marriage” is the label genealogists use.
- You
- Your cousin
- His wife
From the other side, you are their first cousin by marriage.
This connection runs through a marriage, not a shared ancestor, so the ancestor chart can't draw it.
The calculator below works out blood relationships through a shared ancestor — use it to explore the rest of your tree.
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This relationship sits outside the shared-ancestor model, so the card above carries the answer and the calculator opens in its default state. Work out any blood relationship with it, or open the full relationship calculator.
FAQs
What would my cousin's wife be to me?+
Your first cousin by marriage — the marriage decides the term, however you phrase it.
Who am I to my cousin's wife?+
You are her first cousin by marriage — the same marriage link read from the other side.
Does the calculator store my family details?+
No — it runs entirely in your browser. Nothing you enter is uploaded or saved on our servers.
Start with one relative and see what comes back.
Add what you remember and AncestorIQ searches for the rest. Free to build your tree for as long as you like.
No credit card needed. Your tree stays yours.
