It is my first time to apply in Canada. I'm confused and stuck into my head with this question. But first, let me tell you my scenario. I was married in 2004. I had my passport used using my ex lastname working in USA.In 2009, our marriage was annulled. After that I changed all my documents using may maiden name. It's been a long time.And now , I'm applying for TRV in Canada. Should I declare it? Are they gonna find out it I dont declare it? Please advise. Thank you.