If you are looking for ways to convert a civil union certificate to a marriage certificate, you will need to contact your local county clerk and request them to convert the copy into a certified copy of the marriage certificate. You may be required to provide verification of your name change before they can issue your new marriage certificate. It is important to note that only civil union members may request that their civil union certificate be converted to a marriage certificate. For this to happen, the civil union certificate must have been in effect on 1st October 2010, the civil union must not have been dissolved or pending dissolution on 1st October 2010, and it must have been registered in a jurisdiction that recognizes civil unions.