She is married to Archibald Stewart.
They got married in the year 1750 at Saintfield, County Down, Northern Ireland, she was 20 years old.Source 2
They got married on February 20, 1759 at Philadelphia, Philadelphia, Pennsylvania, United States, she was 29 years old.http://trees.ancestry.com/pt/AMTCitationRedir.aspx?tid=106342530&pid=2199/ Ancestry.com