I am applying for a visitor visa to Canada to go visit my uncle and aunt who are permanent residents. My uncle is not actually my father's brother. I am actually my uncle's aunt's sister-in-law's grandson. We are a joint family, so I know it's quite confusing for a normal person. Can somebody help me out in providing a proper proof of relationship with my uncle. I can provide documents such as my uncle's passport and PR card. Apart from this, I don't know what other documents to submit, to prove this relationship. I also have an invitation letter from him. I am really afraid that my visa will get rejected since my uncle is a very distant relative to me. Can somebody please help me out? Quick replies would be highly appreciated.