When George Bryant Grantham was born on 15 September 1868, in Clopton, Dale, Alabama, United States, his father, John Andrew Grantham, was 35 and his mother, Sarah Jane Parmer, was 27. He married Claudie Belle Hudspeth about 1890, in Dale, Alabama, United States. They were the parents of at least 2 sons and 3 daughters. He lived in Capps, Henry, Alabama, United States in 1900 and Dothan, Houston, Alabama, United States in 1930. He died on 12 April 1932, in Dale, Alabama, United States, at the age of 63.