Feminist orator and editor, born in West Brookfield, Massachusetts. Her parents were Francis Stone and Hannah Matthews Stone. She was educated in the public schools at Monson and Wilbraham Academies, and Mt. Holyoke Seminary, and attended Oberlin College. Lucy gave public lectures from 1847 against black slaevry and for women's rights.

Married to the radical Henry Blackwell (1855), after a mutual declaration rejecting the legal superiority of the man in mrriage, she gained wide publicity when she chose to retain her own surname despite her marriage. The epiteth "Lucy Stoner" was coined to mean a woman who advocated doing so.

In the 1860s she helped to establish the American Women Suffrage Association and founded and edited Boston Women's Journal, a suffragist paper which was later edited by her daughter, Alice Stone Blackwell.

Her principal literary works are editorials in the "Woman's Journal," extending over twenty-two years. In religious faith she was a Hicksite Quaker or liberal Unitarian. Her life was a busy and useful one. She lived to see the Columbian Exposition with all its glorious opportunities, and to use them for the good of the cause most dear to her.