When Alfred Gunn Smith was born on 22 December 1828, in Vermont, United States, his father, Jonathan Delano Smith, was 33 and his mother, Sophia Goff, was 28. He married Laura Sophia Esty on 20 March 1854, in Vermont, United States. They were the parents of at least 1 son and 3 daughters. He lived in Richford, Franklin, Vermont, United States in 1860 and Clay Center, Clay, Kansas, United States in 1880. He died on 30 December 1899, in Moscow, Latah, Idaho, United States, at the age of 71, and was buried in Moscow, Latah, Idaho, United States.