When George Albert Blackman was born on 9 February 1863, in Magnolia, Harrison, Iowa, United States, his father, George James Blackman, was 33 and his mother, Harriet Staley, was 33. He married Alice Hudson Sabin on 5 September 1883, in Magnolia, Harrison, Iowa, United States. They were the parents of at least 4 sons and 2 daughters. He lived in Greenacres, City of Spokane Valley, Spokane, Washington, United States for about 10 years and Greenacres Township, Spokane, Washington, United States in 1940. He died on 12 November 1941, in Spokane, Spokane, Washington, United States, at the age of 78, and was buried in Pines Cemetery, Spokane, Spokane, Washington, United States.