When William David Lester was born on 17 September 1899, in Dallas, Texas, United States, his father, David Henry Lester, was 30 and his mother, Nancy Lynn Brownlee, was 23. He married Mildred Eliza Morris on 2 October 1926, in Dallas, Dallas, Texas, United States. They were the parents of at least 1 daughter. He lived in Justice Precinct 2, Tarrant, Texas, United States in 1910 and Justice Precinct 2, Dallas, Texas, United States in 1930. He died on 29 March 1971, in Dallas, Dallas, Texas, United States, at the age of 71, and was buried in Dallas, Dallas, Texas, United States.