Who should read this? Get the resources you need to help navigate someone else's financial affairs.The D.C. Superior Court Probate. Several forms are available for use in various probate legal actions, such as those relating to transferring a deceased person's property. How Can I Access a Deceased Person's Bank Account? If a will is in place, the court will note the decedent's choice of an executor. You'll need the person's Social Security number and certified copies of their death certificate for most agencies and programs. Next of kin refers to a person's closest living blood relative. It's a term often used when sorting out inheritances after a person's death. Decedent's Heirs according to the laws of intestate succession (ie, inheritance) in the absence of a Will.