You need to purchase a certified copy of your marriage certificate. You will need to work with each agency to identify name change requirements. All marriage license documents are signed with one's current legal name, never the intended new name. There is no legal requirement for a name change after getting married; it is a right a couple may choose to exercise. If you intend to change your name after marriage, check with each agency for its requirements to change your records. If an agency requires more than a certified copy of your marriage license, check with Pierce County District Court for details on a court-ordered name change. Washington state law does not impose a time limit after the wedding by which a name change must be accomplished. However, if you are making the change more than a year after your wedding, check with each agency to determine if a certified copy of your marriage license will suffice to change your name with them.