The name change petition can be filed in the County Court or Supreme Court of the county where you live. The forms for changing a name or sex designation in the Supreme Court or New York City Civil Court are included in the chart below.You can search for, get copies of, or update property ownership records, such as deeds and mortgages. A deed is often referred to as a title. An application for name change is handled in the Civil Division of the Circuit Court Clerk's Office. A deed poll is a legal contract involving only one party. Download the guidance and forms for changing an adult's name - this includes the notification form for The Gazette. Finally, you will need to complete a form to put a notice in The Gazette, which is the official publisher of the Royal Courts of Justice.