Ontario marriage licenses, How fast can you get an Ontario marriage license? How much to buy an Ontario marriage license? Where to make a fake Ontario marriage license? Replace Your Lost Ontario marriage licenses, order a fake marriage license online. A marriage certificate is a document containing the details of a marriage performed in Ontario. You can order a copy or multiple copies online if the marriage is registered in Ontario. You can use this certificate to change your name, process a divorce, or as a record of family history.