The character reference letter for court serves the purpose of offering the Judge insights into the Defendant's moral or mental attributes. You may submit a letter to the judge through the Clerk of Court.Everything you need to write a declaration letter to the judge in your custody case: an example, a downloadable template, an outline and tips. In this article, we will discuss how to write a formal letter to a judge, along with the proper format and a sample letter. I am writing this letter on behalf of a family member mine who is presently before you on criminal charges and is due to be sentenced shortly. You cannot write a letter to the family court judge. This would be considered an ex parte communication. What parents and witnesses need to know about character reference letters to the court for child custody. Includes a downloadable sample and template. Customer: I would like to write a letter to the judge on behalf on my child custody case due to how the father is acting.