When Mary Jane Tregeagle was born on 25 September 1835, in Tregony, Cornwall, England, United Kingdom, her father, John Tregeagle, was 24 and her mother, Ann Trethowan, was 30. She married Stephen Henry Stephens on 3 March 1852, in Kooringa, South Australia, Australia. They were the parents of at least 5 sons and 9 daughters. She died on 11 November 1914, in Norwood, South Australia, Australia, at the age of 79, and was buried in Payneham, South Australia, Australia.
Hebrew: Bitter; Marion is the French form.