When George Alrick Hamilton was born on 24 December 1858, in Plain Grove, Plain Grove Township, Lawrence, Pennsylvania, United States, his father, David Hamilton, was 26 and his mother, Susan Offutt, was 23. He married Mary O. Barber on 21 October 1886, in Lawrence, Pennsylvania, United States. They were the parents of at least 2 daughters. He lived in New Castle, Lawrence, Pennsylvania, United States in 1920 and Plain Grove Township, Lawrence, Pennsylvania, United States in 1940. He died on 15 June 1949, in Plain Grove, Plain Grove Township, Lawrence, Pennsylvania, United States, at the age of 90, and was buried in Plain Grove, Plain Grove Township, Lawrence, Pennsylvania, United States.