You have two Canadian ancestors. Just picking the closer one could cost you years

Say your mother's mother was born in Quebec. Say your father's father's father was born in Ontario. Both were Canadian. Either one could anchor your claim.

Almost everyone picks the grandmother.

The logic looks sound—fewer names, fewer records, fewer places for the paperwork to break. You want the short version of a long project.

Three birth certificates instead of four. That's the entire saving.

However, without proper vetting, that instinct can sink your application.

Get a Free Consultation on Applying for Proof of Canadian Citizenship

What you're actually applying for

If a Canadian ancestor sits in your direct line and you were born before December 15, 2025, Canadian law may already count you as a citizen.

Your application asks Immigration, Refugees and Citizenship Canada (IRCC), Canada's citizenship department, to confirm something the law says has been true since the day you were born. That confirmation is a Canadian citizenship certificate, obtained through a proof of citizenship application.

An officer considers all of your submitted supporting documentation and decides whether your claim is legitimate on the balance of probabilities. That's the civil standard: more likely than not, going on what sits in the file. The officer has never met anyone in your family. Everything they know about your ancestors comes from the documents you send.

IRCC's checklist is blunt about which documents count.

Your application has to be supported by authentic, reliable, and verifiable documents for every generation in it, issued by the original authority that created or keeps the record, such as a civil registry or a vital statistics office. Crucially, your application can't be supported solely by third-party records.

Found a Canadian ancestor? Check whether your claim qualifies in 30 seconds.

The grandmother file

Marie-Louise Laforêt was born in Trois-Rivières in 1931 and moved to Vermont after the war. Somewhere along the way, Laforêt became Forrest. Her marriage certificate, her Social Security record, and her headstone all read Forrest.

Claiming through this side of your family means proving two parent-child links. That's three birth certificates: Marie-Louise's, your mother's, and yours.

Marie-Louise's Quebec birth record was kept by a parish, though, not by the province. IRCC won't accept Quebec birth or marriage certificates issued before January 1, 1994. You need a reissued certificate from the Directeur de l'état civil du Québec, or a certified reproduction from BAnQ, Quebec's national archives. Requests to BAnQ for certified copies jumped more than thirtyfold in a year, most of them from Americans. You're joining that line.

Then there's the name. Laforêt on one document, Forrest on the next. You'll need something official that puts both names on the same page, like a marriage certificate or a name change order.

This lineage is shorter. The documents behind it are harder to get.

The great-grandfather file

James was born in Peterborough in 1901 and moved to Toledo in his twenties. Your grandfather, your father, and you were all born in Ohio.

Three parent-child links. Four birth certificates.

Ontario still holds his birth registration, and ServiceOntario will issue it. Ohio holds long-form certificates for the other three, each naming the parents. Four documents, four original authorities, all of them easily reachable.

This file is longer and better documented. There are no name changes to explain, and less reason for an officer to write back asking for more.

The bottom line: choose the line of descent with better supporting documentation

The length of your ancestral line doesn't prove how easy the application will be.

Every generation you add is another birth certificate, another archive interaction, and another chance for a name to shift. Great-grandparent claims can run to eight documents. If your long line crosses a province with a slow archive, or a generation whose records burned, the short line wins.

Length of your ancestral line hides a second problem too. Which ancestor you claim through can change whether you qualify at all, not just how hard it is to prove.

Descent rules before February 15, 1977, treated mothers and fathers differently. Some ancestors lost their Canadian status. IRCC's list of accepted documents still refers to British subject status before January 1, 1947, and before April 1, 1949 for Newfoundland and Labrador. None of that shows up on a family tree. A lawyer, not a form, is who answers those questions.

Why applicants are asked to do more now

A routine IRCC review in early June 2026 turned up roughly 100 citizenship certificates that appeared to have been issued without enough evidence behind them. The Registrar of Canadian Citizenship wrote to the holders and asked them to send the certificates back during the check. IRCC widened the review to about 6,500 files and ended it on June 30.

IRCC said its guidance had been unclear, for its own officers as much as for applicants, about what counts as acceptable documentation. Some approved files had leaned on open genealogy databases instead of certified records.

The department has since rewritten that guidance and updated its forms and instruction guide. Eligibility didn't change. The evidence requirements did.

Four questions for each line

Work through both lines separately, using the following questions as a way to assess each:

1. Which province registered your ancestor's birth, and will that province still issue the record?
2. Can you name the original authority for every birth between that ancestor and you?
3. Where do the names stop matching, and which document explains the gap?
4. For any record you can't obtain, can you show IRCC in writing what you tried?

The line that survives those four questions is your claim. It might be the longer one.

Processing time for proof of citizenship now runs close to three years at the time of writing. A refusal puts you back at the end of that queue, holding the same documents you couldn't get the first time.

Two Canadians in your tree? Check which claim qualifies in 30 seconds.

Get a Free Consultation on Applying for Proof of Canadian Citizenship