Mary Bonney was the fourth child of six in her family, who were devoted Baptists. Her parents were Benjamin and Lucinda (Wilder) Bonney. She was the granddaughter of Benjamin Bonney and of Abel Wilder, both of
Chesterfield, Massachusetts, and both soldiers in the
American Revolutionary War. After her parents started her education at Ladies Academy in
Hamilton, New York, she transferred to the
Emma Willard School in
Troy. Here she found a classical curriculum that was nearly identical to that provided in men's colleges. After two years at Emma Willard School, Bonney graduated in 1835 and began her teaching career. She taught in a variety of cities and states, ranging from
Jersey City and other places in New Jersey,
New York City,
South Carolina,
Providence, Rhode Island; and
Philadelphia, among others. She first taught in New Jersey. Next she moved to New York City, where she became the principal of academy in De Ruyter, before she took a temporary teaching spot at her alma mater. In 1842 she moved to the South in order to be in charge of a girls' school in
Beaufort, South Carolina. After six years, she returned to the North, teaching in
Providence, Rhode Island. A year later she moved to Philadelphia to take another teaching position. ==Ogontz School for Young Ladies==