My great-grandparents were Canadian — am I eligible?

Yes — if your great-grandparent was born in Canada (or naturalized there) and the chain of citizenship down to you was never broken, you likely have a claim to Canadian citizenship by descent right now. This is a live, fully supported pathway, not a future feature. arryv builds mail-ready CIT 0001 packages for great-grandparent and deeper chains today.

That last part matters because it wasn't always true. Until Bill C-3 removed the old first-generation limit, citizenship by descent stopped after one generation born outside Canada — so a great-grandparent chain almost never worked. That cap is gone. What used to be a dead end is now a straightforward (if document-heavy) application.

Why "great-grandparent" used to be the wrong answer

Before Bill C-3 came into force on December 15, 2025, the rule was blunt: if your parent was born outside Canada, you could not inherit citizenship through them — full stop. It didn't matter how Canadian your grandparent or great-grandparent was. One generation born abroad, and the line was cut.

That meant a whole category of families — Canadian great-grandparent, grandparent born in the US, parent born in the US, you born in the US — were locked out, even though the Canadian ancestry was real and documentable.

Bill C-3 removed that generational cap. The operative rule is now the same one that governs a grandparent-based claim: each generation is a citizen if their parent was a citizen at the time of their birth. There's no limit on how many generations that chain can run through, and no requirement that the ancestor at the top of the chain was Canadian-born specifically — a naturalized Canadian ancestor works too. What matters is that the chain itself was never broken.

For the underlying legal mechanics, our Bill C-3 explained post covers the statute and the court case behind it.

What "unbroken chain" actually means

This is the part worth getting right, because it's where most self-assessments go wrong.

Citizenship has to flow link by link. Your great-grandparent's citizenship (by birth in Canada or by naturalization) has to have existed before your grandparent was born. Your grandparent's citizenship has to have existed before your parent was born. Your parent's citizenship has to have existed before you were born. If any one of those links is missing — a birth that happened before the ancestor's citizenship attached, a renunciation, a formal loss of status under old rules — the chain breaks at that point, and nobody born after the break inherits automatically.

A few things that do not break the chain, despite sounding like they might:

• Your great-grandparent naturalized rather than being born in Canada. Fine, as long as naturalization happened before your grandparent's birth.
• Nobody in the chain ever lived in Canada after the anchor ancestor. Doesn't matter — descent isn't about residency.
• Records use old terminology like "British subject" for anyone in the chain born before 1947. That's expected for that era and doesn't disqualify anyone; it just means the documentation looks a little different.

What can genuinely break the chain: a formal renunciation of citizenship, or certain historical loss-of-citizenship events under pre-1977 law. If you suspect either applies to someone in your line, that's a case worth a second opinion before you file.

The documents you'll need

A great-grandparent claim is really four (or more) linked applications stacked on top of each other, evidence-wise. You need a filiation record for every generation, plus proof of the anchor ancestor's Canadian status:

• Your birth certificate, showing your parent's name.
• Your parent's birth certificate, showing your grandparent's name.
• Your grandparent's birth certificate, showing your great-grandparent's name.
• Your great-grandparent's proof of Canadian citizenship — a Canadian birth certificate if they were born in Canada, or a citizenship/naturalization certificate if they naturalized. These aren't interchangeable, so get the right one for your family's situation.
• Marriage or name-change certificates anywhere a name changed between generations, so the officer can follow the paper trail.

There's no separate government form for great-grandparent-and-deeper chains — IRCC has applicants provide the additional generation on a supplementary sheet that mirrors the grandparent section of the CIT 0001. It scales linearly: more generations means more documents, not a different kind of application. Our guide on proving citizenship by descent walks through building that evidence chain in more detail, and ordering a long-form birth certificate in Canada covers the province-by-province process for the anchor document.

When older records get messy

The further back your chain runs, the more likely something is missing, misspelled, or filed under a name that doesn't match later records. A few common fixes:

• Provincial archives hold older vital records that predate what's available through standard vital statistics requests.
• Library and Archives Canada has naturalization lists, census records, and immigration files that can corroborate a link when a certificate is thin on detail.
• Anglicized or changed names are common a few generations back — a marriage certificate or naturalization record often shows both spellings and ties them together.
• Missing originals aren't automatically fatal. IRCC will accept a letter of no record from the issuing authority plus secondary evidence in some cases, though this is exactly the kind of situation where getting it right the first time matters.

Does it matter if the birth was before 1977?

If any generation in your chain was born before February 15, 1977, there's an additional (well-settled) rule that applies to that link — it doesn't block a great-grandparent claim, but it changes which paragraph of the Citizenship Act governs that generation and what supporting documents to gather. If that applies to your family, read our post on born before 1977 and Canadian citizenship alongside this one.

When to get a lawyer involved

arryv is not a law firm, and most great-grandparent chains are handled well through a carefully assembled self-filed application. But bring in a Regulated Canadian Immigration Consultant (RCIC) or Canadian immigration lawyer if:

• Anyone in the chain renounced Canadian citizenship or may have lost it under pre-1977 rules.
• A key record is genuinely unobtainable and you're relying entirely on secondary evidence.
• There's adoption, legitimation, or disputed parentage anywhere in the line.
• Any ancestor's birth in the chain was before 1947, which sits outside what arryv's current tools can automate — see our note on citizenship claims before 1947 for why that era is different.

Frequently asked questions

Can I get Canadian citizenship through a great-grandparent?

Yes, if the chain of citizenship from your great-grandparent down to you was never broken by renunciation or historical loss of status. Bill C-3 removed the old cap that limited descent to one generation born outside Canada, so great-grandparent (and deeper) chains are now a supported pathway.

Do I need my great-grandparent to have been born in Canada, or can naturalization count?

Naturalization counts. What matters is that your great-grandparent was a Canadian citizen — by birth or by naturalization — before your grandparent was born. A naturalization certificate is the correct document in that case, not a Canadian birth certificate.

How many generations back can a citizenship-by-descent claim go?

There's no fixed generational limit anymore. As long as every link in the chain is documented and unbroken, descent can run through a great-grandparent or further. The documentation burden grows with each generation, but the legal pathway doesn't change.

What if one of the birth certificates in my chain is missing?

Missing records aren't automatically disqualifying. Provincial archives, Library and Archives Canada holdings, and secondary evidence (with a letter of no record from the issuing authority) can often fill the gap. If a link is genuinely unresolvable, that's worth a lawyer's review before you file.

Does it cost more to file through a great-grandparent than a grandparent?

The government filing fee is the same regardless of chain length — check IRCC's current fee schedule for the exact amount. What increases with more generations is the document-gathering effort, since each additional link needs its own filiation record.

Ready to check your eligibility?

If your family history includes a Canadian great-grandparent, don't assume it's too distant a connection to matter. Take arryv's free 60-second eligibility quiz at arryv.ai/check — it walks through your specific chain, flags what documents you'll need, and tells you whether you qualify for an AI-prepared, mail-ready application package.