Mary Shirley, born on 17 February 1762, married William McGuire on 23 February 1778 in Virginia. During the Revolutionary War, William and Mary McGuire and their son Michael were taken prisoner on 26 June 1780 and moved from Virginia to Montreal, Quebec, in Canada, where the British interned them for over two years. A British record from Quebec dated 16 September 1782 shows Mary with her husband and sons Michael and Thomas on the list "Return of Women & Children Prisoners with their Husbands to be sent to their Homes," and Revolutionary War records show that in October 1782 William was sent from the Province of Quebec for exchange by way of Lake Champlain. In the early 1800's, William bought property and the family settled in Bedford County, Tennessee, where Mary Shirley McGuire and her husband William are buried in Horse Mountain Cemetery on Horse Mountain Road between Shelbyville and Wartrace, Tennessee.