When Mary Barnby was born on 4 July 1781, in York, Yorkshire, England, her father, Robert Barnby, was 34 and her mother, Martha Lund, was 32. She married Thomas Hutchinson on 9 April 1801, in Beeford, Yorkshire, England, United Kingdom. They were the parents of at least 4 sons and 2 daughters. She died on 13 July 1859, in Hilston, Yorkshire, England, at the age of 78, and was buried in Hilston, Yorkshire, England.