What is my granddaughter's husband to me?
Your granddaughter's husband is your grandson-in-law — an informal extension, since English only makes the first generation of in-law titles official. Most people simply say 'my granddaughter's husband.' Either way he joined your family through marriage, two generations below you, and his children with your granddaughter are your great-grandchildren.
Relationship
Grandson-in-law
English has no single formal word for this relative — “grandson-in-law” is the label genealogists use.
- You
- Your granddaughter
- Her husband
From the other side, you are their grandparent-in-law.
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 granddaughter's husband be to me?+
Your grandson-in-law — the marriage decides the term, however you phrase it.
Who am I to my granddaughter's husband?+
You are his grandparent-in-law — 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.


