When Lawrence Steve Coghlan was born on 30 July 1901, in Austin, Travis, Texas, United States, his father, Washington Perry Coghlan, was 50 and his mother, Lydia Jane "Jennie" Shelton, was 33. He married Edith Denbo on 14 March 1933, in Comal, Texas, United States. He died on 11 January 1969, in San Antonio, Bexar, Texas, United States, at the age of 67, and was buried in Roselawn Memorial Park, San Antonio, Bexar, Texas, United States.