When Eliza Hobart was born on 13 May 1801, in Edmunds Township, Washington, Maine, United States, her father, Isaac Hobart, was 29 and her mother, Joanna Hersey, was 25. She married William Mc Cobb Brooks on 20 October 1822. They were the parents of at least 3 sons and 3 daughters. She lived in Waterville, Kennebec, Maine, United States in 1930 and Billerica, Middlesex, Massachusetts, United States in 1940. She died on 8 January 1884, in Boston, Suffolk, Massachusetts, United States, at the age of 82.