City of Sydney Relationships Declaration
Other institutions such as the Registry of Births Deaths and Marriages no longer accepts an Australian Marriage Certificate as a form of ID – this creates an equal situation for both opposite sex and same sex couples as both are not allowed to present their relationship certificates as a form of ID.
Canadian nationality law
Documents other than those listed above, including Canadian passports, are not considered as proof of citizenship, but a passport is issued only after review of other documentary proof, as noted above. Church-issued baptismal certificates and birth certificates issued by an authority other than a provincial or territorial government are also not proof of Canadian citizenship. Such certificates were common in Quebec, as the provincial government did not start to issue birth certificates until 1994.