June 21, 1835 (her tombstone says 1843), near Tintern Abbey, Monmouthshire, Wales.
Spring Forest Cemetery, Binghamton, New York.
Mary was the wife of Henry Wheeler (married 1858), who as of 1893 was the Philadelphia, Pennsylvania, Conference of the Methodist Episcopal Church.
When Mary was six years old, her family emigrated to America, settling in Binghamton, New York. She excelled in composition, and began to write for publication at an early age. At first she wrote more poetry than prose.
Before marriage, she was principal of the largest high school in Binghamton.
Mary served as president of the Woman’s Foreign Missionary Society of Philadelphia; as a national evangelist for the Woman’s Christian Temperance Union (WCTU); was a member of the National Lecture Bureau of Chicago, Illinois; and in 1891 was appointed superintendent of the World’s WCTU Mission.
Her works include: