A person may have several citizenships at the same time. For example, a person who was born in a country other than Canada, who applies for citizenship and is naturalized in Canada, and then naturalized in a third country may be a citizen of all three countries. However, cases of dual citizenship are more common. Although this pamphlet deals primarily with dual citizenship, the information contained in it applies equally to people who are citizens of more than two countries. The terms “dual citizenship” and “dual nationality” are now used interchangeably.
Dual Citizenship
Might be something in here for you Mike.
http://www.cic.gc.ca/english/resourc...ions/proof.asp
http://www.slaw.ca/2009/04/20/citize...act-amendment/