When Grover F Brewster was born on 24 August 1893, in Blairsville, Union, Georgia, United States, his father, John Wilborn Brewster, was 32 and his mother, Elizabeth Julie Ann Thomason, was 32. He married Beulah Pilgrim on 25 August 1916, in White, Georgia, United States. They were the parents of at least 1 son and 2 daughters. He lived in District 1441, White, Georgia, United States in 1930 and District 861, White, Georgia, United States in 1940. He died on 5 January 1959, in White, Georgia, United States, at the age of 65, and was buried in Chattahoochee Hills, Fulton, Georgia, United States.