Mary married William Armstrong, Esq about 1750 in Florida, Orange, New York. William (son of Francis Armstrong and Elizabeth Deborah Lattimore) was born on 25 Oct 1722 in County Longford, Ireland; died on 11 Mar 1805 in Florida, Orange, New York, United States; was buried in 1805 in First Presbyterian Church Cemetery, Florida, Orange, New York, United States. [Group Sheet] [Family Chart]