Rosanna May Munger was born on March 16, 1866 in Haverhill, Massachusetts, the daughter of Rev. Theodore Thornton Munger (1830-1910) and Elizabeth Kinsman Duncan (1842-1886). Rosanna (called "Rose" or "Rosa") was diagnosed in 1870 with a serious spinal disease. As she grew up, Rosanna would help her father with his literary work, accomplish secretarial work for an office, and volunteer for a number of organizations including missionary committees and the League of Women Voters. Rosanna never married.
Bacon, Benjamin Wisner. Theodore Thornton Munger: New England Minister. New Haven: Yale University Press, 1913.