Mary was the eldest child of Reverend John P. Cowles and
Eunice Caldwell Cowles. John was an
abolitionist and a professor of
Greek,
Latin,
Syriac,
French,
German, and
Italian. at
Oberlin College shortly after its founding, from 1835 until he had a falling out with the President over the theory of
Christian Perfection five years later. Eunice was from an old Ipswich, Massachusetts family and was educated at the original Ipswich Female Seminary. She was the first principal of Wheaton Female Seminary, now
Wheaton College. She was also the Associate Principal at Mount Holyoke Female Seminary (now
Mount Holyoke College) at its founding by
Mary Lyon. It appears she had two sisters and two brothers. Roxana Caldwell Cowles born in 1841 also in Elyria, Ohio. When Roxana died and left Mary money, Mary created a scholarship for Ipswich girls. John Phelps Cowles Jr was born in
Oberlin, Ohio, in 1844. He married
Sigourney Trask in
Fuzhou, China on January 6, 1885, and disappeared in
Nicaragua on his final return trip from China to Massachusetts in 1893. Sigourney asked for help from the State Dept. to locate John, but no trace of him was found. His children were in Mary’s will: “Henry T. Cowles of Porto Rico” (born in 1887 in
Dover, Massachusetts and died in 1976 in
Wellesley) and “Eunice Cowles Cooper of Barcroft, Virginia” (born 1885. She was deaf per a letter of her mother to
Alexander Graham Bell.). Henry Augustine Cowles was born in 1846 in Ipswich and died a soldier in the
Civil War in 1864. Susan was born in 1848 in Ipswich. In 1844, Mary and her family moved to
Ipswich, Massachusetts, to reopen the
Ipswich Female Academy upon the request of the town. She was educated at the Academy which was run by her parents until they closed it in 1876. Because her parents followed Lyon's philosophy of an academically rigorous education for girls, Mary received the equivalent of a college education. A history of the town describes her as the "brilliant daughter". ==Career==