The youngest of three children born to John Louis and Fannie (Wheelock) Rousmaniere, Mary Stone Rousmaniere was born in 1880 and raised in Roxbury, Massachusetts. Educator Frances (Rousmaniere) Dewing was her older sister. Rousmaniere attended St. Margaret’s School in Connecticut and the Froebelian Kindergarten Teacher Training School in Boston, graduating in 1905, but never taught formally. She cared for her mother until her death in 1903, and then cared for and traveled with her aunt and uncle, Sophie (Knight) and Edmund Swett Rousmaniere (1858-1926). Her uncle was dean of St. Paul’s Church in Boston. She never married and died in 1956.
From the guide to the Papers of Mary Stone Rousmaniere, (inclusive), (bulk), 1817-1994, 1896-1922, (Schlesinger Library, Radcliffe Institute)