If you are interested in applying for Canadian citizenship, you’ll need to have certified records on hand — such as your ancestors’ birth or marriage records — and you’ll need to apply for those documents. Completing the application from the Archives of Ontario is a bit complicated, and using the wrong codes or sending incomplete requests could push you back in the queue. Each province has its own archive. Here’s what the form asks and how to complete it to obtain what you need. Find records information and submit an order here.