When Mary Jane Hinckley was born on 23 August 1818, in Georgetown, Sagadahoc, Maine, United States, her father, John Hinckley, was 31 and her mother, Jane Oliver, was 28. She married Washington Oliver on 24 November 1842, in Georgetown, Sagadahoc, Maine, United States. They were the parents of at least 4 sons and 5 daughters. She lived in Georgetown, Lincoln, Maine, United States in 1850. She died on 25 January 1896, in Georgetown, Sagadahoc, Maine, United States, at the age of 77, and was buried in First Baptist Church Cemetery, Georgetown, Sagadahoc, Maine, United States.