Together they founded the New York Women's State Temperance Society after Anthony was prevented from speaking at a temperance conference because she was female. In 1851, she met Elizabeth Cady Stanton, who became her lifelong friend and co-worker in social reform activities, primarily in the field of women's rights. In 1856, she became the New York state agent for the American Anti-Slavery Society. Born into a Quaker family committed to social equality, she collected anti-slavery petitions at the age of 17. Anthony (born Susan Anthony February 15, 1820 – March 13, 1906) was an American social reformer and women's rights activist who played a pivotal role in the women's suffrage movement.