Canadian citizenship through a great-great-grandparent

If your great-great-grandparent was born in Canada and the citizenship chain from them down to you was never broken, you can have a legitimate claim to Canadian citizenship by descent today — no cap at grandparent, no cap at great-grandparent either. Bill C-3, in force since December 15, 2025, removed the generational limit entirely. What matters isn't how many generations back the Canadian ancestor sits; it's whether every link in the chain holds.

This is a longer chain than most people ask about, so it's worth being precise about how it works and what it actually takes to prove.

How deep can the chain go?

There's no statutory ceiling. Canadian citizenship by descent runs through paragraph 3(1)(b) of the Citizenship Act: a person born outside Canada is a citizen if, at the time of their birth, one of their parents was a citizen. That test applies link by link, generation by generation. It doesn't ask how many links there are — it asks whether each one is intact.

Before Bill C-3, the law stopped counting after one generation born abroad. A parent born abroad to a Canadian couldn't pass citizenship to their own child born abroad. That's the rule Bill C-3 deleted. With the cap gone, a chain running great-grandparent, great-great-grandparent, or further back works exactly the same way a parent-to-child chain does — it just has more generations to document.

arryv fully supports these longer chains now, including great-great-grandparent and deeper. If your quiz result flags this scenario, the package generator builds out a supplementary ancestor sheet for every generation beyond grandparent, alongside your CIT 0001 form, cover letter, and chain-of-descent documentation.

The unbroken-chain rule, applied to five generations

The math is the same whether you're two generations removed or five — but the more links there are, the more places a chain can theoretically break, so it's worth walking through carefully.

Start at your Canadian-born great-great-grandparent. For citizenship to reach you, each of these has to be true:

• Your great-grandparent was a Canadian citizen (by birth, through their parent) at the moment your grandparent was born.
• Your grandparent was a Canadian citizen at the moment your parent was born.
• Your parent was a Canadian citizen at the moment you were born.

If any one of those links was broken — most commonly by a formal renunciation of citizenship before the next birth — the chain stops there, and generations born after that point don't inherit. Short of renunciation, a citizen-by-descent parent's status simply carries forward; there's no separate test that resets at each generation for anyone born before December 15, 2025.

One thing this cohort does not need to worry about: the 1,095-day physical-presence "substantial connection" test that Bill C-3 introduced. That test applies only to children born on or after December 15, 2025, and it attaches to the immediate transmitting parent's presence in Canada before that birth — never to a grandparent, great-grandparent, or any earlier link. If everyone in your chain was born before that date, presence in Canada never enters the analysis.

What "proof" means here — you're not applying to become a citizen

It's worth saying plainly: if your chain is intact, you are already a Canadian citizen. You have been since birth. The CIT 0001 application isn't a request to be granted citizenship — there's no test, no interview, no oath. It's a request for a certificate that documents citizenship you already hold. For more on how that distinction plays out procedurally, see how to prove Canadian citizenship by descent.

Documents you'll need, generation by generation

A five-generation chain means more paperwork than a grandparent claim, but the type of document at each step is the same. You need two things for every link: proof of who each person is, and proof each parent-child relationship is real.

For a great-great-grandparent chain, expect to assemble:

• Your birth certificate, showing your parents.
• Your parent's birth certificate, showing your grandparent.
• Your grandparent's birth certificate, showing your great-grandparent.
• Your great-grandparent's birth certificate, showing your great-great-grandparent.
• Your great-great-grandparent's Canadian long-form birth certificate (or, if they became a citizen by naturalization rather than being Canadian-born, their citizenship or naturalization certificate — the two document types aren't interchangeable). This is the anchor of the whole application.
• Marriage or legal name-change certificates for every generation where a surname changed. With five generations, this is often the longest part of the list — Anglicized names, remarriages, and inconsistent spellings across older records are common the further back you go.

IRCC has no separate named form for chains this long. Instead, information for each generation beyond grandparent goes on a supplementary sheet that mirrors the fields IRCC already uses for grandparents on the CIT 0001 form. arryv generates this sheet automatically once your quiz result identifies a great-great-grandparent (or deeper) chain, using original, primary-source documents — not genealogy-site printouts, which IRCC doesn't treat as sufficient on their own.

Where older records get harder to find

The further back a chain runs, the more likely you'll hit at least one gap. A few starting points:

• Provincial vital statistics archives hold birth, marriage, and death records, though records past a certain age (often 100+ years) may sit with the provincial archives instead of the standard vital statistics office.
• Library and Archives Canada holds census records (public up to 1931), immigration records, and — if a link in your chain was naturalized rather than Canadian-born — naturalization-list indexes from 1915–1951.
• Church and parish records predate civil registration in many parts of Canada. For Quebec and Acadian ancestry, the Drouin Collection covers parish records back to the 1600s.
• Delayed registration or secondary evidence — affidavits, baptismal records, old passports — can sometimes stand in where an original document was never created or has been lost. IRCC does accept this in some circumstances, but it raises the evidentiary bar.

If your great-great-grandparent's own citizenship came through naturalization rather than being born in Canada, the required anchor document changes — you'd need their naturalization or citizenship certificate, not a birth certificate, and the search process differs depending on whether the naturalization predates 1947. Our guide to citizenship through a naturalized ancestor covers that path in detail if it applies to your chain.

When to get a lawyer involved

arryv builds a clean, well-organized application, but for some five-generation files a Regulated Canadian Immigration Consultant (RCIC) or Canadian immigration lawyer is worth consulting before you submit. That's especially true if:

• Any generation's birth falls before 1947, when Canadian citizenship as a legal status didn't yet exist and people were British subjects instead.
• Anyone in the chain renounced Canadian citizenship at any point.
• A key record is genuinely missing and you're relying on secondary evidence to fill the gap.
• There's an adoption, an out-of-wedlock birth with unclear parentage, or a legitimation somewhere in the line.

Our quiz is built to catch these and route you to a lawyer consult rather than push a package through when the facts don't support it.

Frequently asked questions

Can Canadian citizenship really pass down through a great-great-grandparent?

Yes. Bill C-3 removed the generational cap on citizenship by descent, so there's no limit on how many generations back the Canadian-born (or naturalized) ancestor can be, as long as every link in the chain between them and you is unbroken.

Do I need documents for every single generation, or just the first and last?

Every generation. You need a birth certificate (or equivalent) proving filiation at each link in the chain, plus the anchor document proving your earliest Canadian ancestor's citizenship.

Does the 1,095-day physical presence rule apply to my great-great-grandparent?

No. That test only applies to children born on or after December 15, 2025, and only to the immediate transmitting parent. It has no bearing on ancestors further back in the chain.

Is this a naturalization process — do I have to take a citizenship test?

No. If your chain is intact, you're already a Canadian citizen and have been since birth. The application requests a certificate proving that existing status; there's no test, interview, or oath involved.

What if I can't find a birth certificate for someone several generations back?

Provincial archives, Library and Archives Canada census and naturalization records, and church/parish records (including the Drouin Collection for Quebec) can often fill gaps. Where an original genuinely doesn't exist, IRCC accepts secondary evidence in some circumstances — this is a good point to loop in an RCIC or immigration lawyer.

Ready to check your eligibility?

If you think a great-great-grandparent — or any ancestor further back — might give you a claim, the fastest way to find out is arryv's free 60-second eligibility quiz. It walks through your family chain generation by generation and flags exactly which documents you'll need. Start at arryv.ai/check.