On November 5, 1851 Hannah married Robert Pearsall Smith, a man who also descended from a long line of prominent Quakers in the region.

Robert managed Hannah’s father’s business, the Whitall, Tatum & Company glass factories.

[3] William Boardman apparently groomed Robert and Hannah Smith to join the Holiness movement as speakers.

From 1873–1874 they spoke at various places in England, including Oxford, teaching on the subjects of the "higher life" and "holiness," after a foundational meeting at the Broadlands Conference sponsored by the spiritualists Lord and Lady Mount Temple.

[2] She also served as the national superintendent of the WCTU Evangelistic Department, producing a network of activists across many countries.

[5] By this time, however, Hannah's work with the WCTU as well as her book, The Christian’s Secret of a Happy Life (1875), was well-known internationally.

Mary Clement Leavitt, WCTU world missionary having just been in New Zealand wrote to Hannah Smith in August 1885 to ask for contacts in England, stating: "I met a Rev.

"[6] In 1888, the Smith family moved to England because their daughter Mary married an English barrister, Frank Costelloe.

It was in England that their younger daughter Alys Pearsall Smith met and married the philosopher Bertrand Russell.

Her niece, Martha Carey Thomas was the first female dean of any college in America and an active suffragist.