She had three brothers ; her sisters were Elizabeth Palmer Peabody and Mary Tyler Peabody Mann , later Horace Mann 's wife .
Peabody 's father was the dentist Nathaniel Peabody , while her mother was the strong Unitarian Elizabeth Palmer .
mother had three brothers ; mother 's sisters were Elizabeth Palmer Peabody and Mary Tyler Peabody Mann , later Horace Mann 's wife .
Peabody 's father was the dentist Nathaniel Peabody , while her mother was the strong Unitarian Elizabeth Palmer .