When someone offers to help you make a down payment on a house, your lender will require a gift letter for a mortgage. Here's what it includes.The County Board of Supervisors accepts donations and gifts offered to the County for the use, benefit and advantage of the citizens of San Bernardino County. A short letter like this sample gift letter will cover all of the requirements your lender needs. This guide explains how to document gift funds for a mortgage and meet lender requirements. Guardianships of Children in the Probate Court. This web page provides basic information about probate guardianships for children.