There are problems with your posting. Private citizens cannot create social security numbers. The SSAN is unique and controlled by the government. If you value your credit rating, guard yours religiously. Prior to 1973, the first three digits denoted where a person lived when the number was issued. Afterwards, the first three digits based on zip code of the person's mailing address. The fact that he's buried in a veteran's gravesite indicate there were military records at time of death. When were those records destroyed? If he died violently, there was probably an investigation by the local authorities? Have you pursued that angle?