When David Thomas Winslett was born on 15 May 1899, in Gatesville, Coryell, Texas, United States, his father, Frederick Mortimer Winslett, was 40 and his mother, Martha Caldwell, was 37. He married Eura D Williamson in 1922, in Texas, United States. They were the parents of at least 1 son and 1 daughter. He lived in Hamlin, Jones, Texas, United States in 1910 and American Judicial Township, Sacramento, California, United States for about 10 years. He died on 8 May 1961, in Sacramento, Sacramento, California, United States, at the age of 61, and was buried in Citrus Heights, Sacramento, California, United States.