You can request any deceased individual's SSN application (which includes SSN, address, birth date, parents' names) directly from the SSA with proof of death:

You can request any deceased individual's SSN application (which includes SSN, address, birth date, parents' names) directly from the SSA with proof of death: https://secure.ssa.gov/apps9/eFOIA-FEWeb/internet/main.jsp https://secure.ssa.gov/apps9/eFOIA-FEWeb/internet/main.jsp