Partially answering my own question with some basic googling: apparently, under modern Canadian law, revocation of allegiance is not the same as revocation of citizenship; you can only renounce Canadian citizenship through a special application process.
21.02.2026 13:35
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s/revocation/renunciation/ pls in the above.
21.02.2026 13:28
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I wonder whether revocation of allegiance to a prior government (as part of the US naturalization process) is equivalent to revocation of citizenship. If so, that might exclude a large number of Canadian ancestors who migrated to the US (including a couple of mine, possibly).
21.02.2026 13:27
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