1st try and find his sister Louise. 2nd death certificates should list his parents. Look for their obits. U.S. Social Security Death Index Louis Coursey b: 10 May 1900 d: November 1966 lived in Montgomery, Pennsylvania # 002-14-3834 Geneva Coursey b: 3 January 1903 d: September 1985, lived in Montgomery, Pennsylvania # 169-26-8989 Louis Coursey b: 25 April 1934 d: May 1986 lived in Montgomery, Pennsylvania # 159-28-0822 Social Security Online for a free you can find out who the parents of these people are. Freedom of information requests http://www.ssa.gov/pgm/reach.htmhttp://www.ssa.gov/pgm/reach.htm the form to apply for SS card requests names of parents.