When Alonzo Wesley Jamison was born on 19 October 1870, in Collin, Texas, United States, his father, Asa Harrison Jamison, was 24 and his mother, Julia Ann Eller, was 23. He married Cecil Jenwyl Wells about 1917, in Collin, Texas, United States. They were the parents of at least 1 son and 1 daughter. He lived in Prosper, Collin, Texas, United States for about 10 years and Justice Precinct 1, Denton, Texas, United States in 1940. He died on 12 November 1951, in Dallas, Dallas, Texas, United States, at the age of 81, and was buried in Valley View, Cooke, Texas, United States.