visitor visa for Canada: proof of relationship for inviting family friend

Upvote:6

You probably don't need to provide proof of relationship. It's entirely reasonable for a family friend to be invited to a wedding. Including names of the people being married and details of the wedding, to prove it is really happening, is probably helpful.
Your aunt needs to state that her husband is paying for the trip (assuming he is). She needs to include her husband's financial details, including bank statements, to prove that he can afford to pay for her, and also a statement by him that he will be paying. It is not necessary for there to be a joint account. It's very common that husbands pay for their wife's trip when she isn't financially independent and this won't negatively impact the application. (Your aunt should also provide any financial information about herself that she can.)
Her husband needs to provide enough financial information to prove that he can afford to pay, just as if he was applying himself. Tax statements might be part of that, but bank account details showing cashflow details are much better.

DJClayworth 63066

Source: stackoverflow.com