When John Green Daniel was born on 17 March 1898, in Hillsboro, Hill, Texas, United States, his father, Joshua Thomas Daniel, was 47 and his mother, Mary Penelope (Mollie) Gough, was 35. He married Duma Clovis Farris on 30 June 1930, in Rockwall, Texas, United States. He lived in Justice Precinct 1, Hill, Texas, United States for about 10 years. He died on 10 October 1969, in Hillsboro, Hill, Texas, United States, at the age of 71, and was buried in Hillsboro, Hill, Texas, United States.