Use the sample I751 affidavit as an example. Remember that each letter is unique and should contain elements that are personal to your story.COUNTY OF LOS ANGELES } SS. I,. , living at. An affidavit is a written statement you're asserting is true. Ask the company or institution (like a bank) that has the property if they have an Affidavit for you to use. State the applicant's full name, place of birth, date of birth, and the full names of both of the applicant's parents. 1) Fill out lines 1-4, sign and date the affidavit. California Family Code.