Mary Amory Greene was the daughter of John Singleton Copley Greene [1810-1872], and a descendant of American artist John Singleton Copley [1738-1815] and his wife Susanna Clarke [1745-1836]. Her brother, John Singleton Copley Green, Jr., died in 1872, and she had a step brother, Henry Copley Greene.
Bibliography
1901
The Greene Family in England and America with Pedigrees. Boston, 1901: 83-86
1903
Clarke, Louise Brownell. The Greenes of Rhode Island, with Historical Records of English Ancestry. New York, 1903:432, 580