General Information and Instructions about Ending Your Marriage. Those forms must be notarized and filed with the Washington State Registrar of Vital Statistics to be valid. 6.Children of the marriage. Blank forms to print and fill out on your own, with how-to instructions for completing and filing. Talk to a lawyer familiar with family law before filing anything with the court. The forms below are some of the most common forms used in the Domestic Relations Division, but there are many more. The following are links to the family law court forms needed to file for divorce or legal separation in Washington state courts. 12 suprising divorce laws from Washington State. If yes – which forms should I fill up 1. We are the largest judicial circuit in the State of Illinois and one of the largest unified court systems in the world.