Sarah married Richard George Bache on 29 Oct 1767 in Philadelphia, Pennsylvania and the couple had the following children:
Benjamin Franklin Bache, born about 1769
William Franklin Bache, born about 1773
Sarah Franklin Bache, born about 1775
Elizabeth Franklin Bache, born about 1777
Louis Franklin Bache, born about 1779
Deborah Franklin Bache, born about 1781
Richard Franklin Bache, born about 1784
Sarah Franklin Bache, born about 1788
Her Obituary appeared in the Richmond Newspaper Enquirer dated 12 Oct. 1808.
Enquirer -- 12 Oct. 1808. Died the 5th inst., at her house in Franklin Court, Philadelphia, aged 34 years, Mrs. Sarah Bache, wife of Richard Bache and only daughter of the late venerable father of his country, Dr. Benjamin Franklin.
↑ "Benjamin Franklin's Daughter", KATHARINE BAETJER. Curator, European Paintings, METROPOLITAN MUSEUM JOURNAL 38 p. 169