The Social Security Administration is a Federal Government Dept subject to the Freedom Of Information Act. (FOIA) All one needs is the information you have including SSN. The fee depends on if you want a scanned and printed copy of SSN application or an transcribed e-copy sent to email address. I prefer the scanned and printed copy as you can see original handwriting of applicant. SSN application has both parents names including mother's maiden name and places of birth. http://ssa-custhelp.ssa.gov/app/answers/detail/a_id/147/related/1/session/L2F2LzEvdGltZS8xMzg3MTY2NDM0L3NpZC9ZenlWWFdIbA%3D%3Dhttp://ssa-custhelp.ssa.gov/app/answers/detail/a_id/147/related/1/session/L2F2LzEvdGltZS8xMzg3MTY2NDM0L3NpZC9ZenlWWFdIbA%3D%3D If sister is older and he was born 1946 then she could be in 1940 Federal census. You can also try for a copy of siblings SSN application (if they have died) but would probably need correct spelling and birth date, also without SSN it is more expensive to search and less of a chance of finding the correct person. So was the uncle the bio sibling to mother or father or was the aunt? The uncle and aunt should be in the 1930 and 1940 census, hopefully in parents household still. He is in the SSDI as Name:D. R. Hairston SSN:177-36-8981 Born: Sept 16, 1945 (different year than you have) Died: Aug 1988. His SSN was issued in PA in 1962. So in 1962 he was living in PA. Have you tried for his and Sharon's Marriage certificate? The Hancock County online MC form asks for groom's parents names. They married Apr 18, 1987 in Hancock County OH. With both names and date of marriage Certificate #15917 Vol #13293 should not need mother's name.