Katharine Martha Houghton Hepburn was an American feminist social reformer and a leader of the suffrage movement in the United States. Hepburn served as president of the Connecticut Woman Suffrage Association before joining the National Woman's Party. In 1923 Hepburn formed the Connecticut Branch of the American Birth Control League with two of her friends, Mrs. George Day and Mrs. M. Toscan Bennett. She was the mother and namesake of actress Katharine Hepburn and the grandmother and namesake of actress Katharine Houghton.

The Connecticut Woman Suffrage Association (CWSA) was founded on October 28, 1869, by Isabella Beecher Hooker and Frances Ellen Burr at Connecticut's first suffrage convention. Its main goal was to persuade the Connecticut General Assembly to ratify the 19th amendment, giving women in Connecticut the right to vote. Throughout its 52 years of existence, the CWSA helped to pass local legislation and participated in the national fight for women's suffrage. It cooperated with the National Women's Suffrage Association through national protests and demonstrations. As well as advocating for women's suffrage, this association was active in promoting labor regulations, debating social issues, and fighting political corruption.