Mary Geraldine Guinness (Chinese: 金樂婷; 25 December 1862 – 6 June 1949), often known as Mrs. Howard Taylor, was a British Protestant Christian missionary to China, and author of many missionary biographies on the history of the China Inland Mission (CIM).

In her youth, Taylor taught a Bible class for "factory-girls" in Bromley-by-Bow in the East End of London where they lived.

She left London for China as a second-class passenger on the P&O vessel Kaisar-i-Hind I[1] in January, 1888, age 22.

Staying only long enough to exchange their European clothes for the national Chinese costume, the missionaries started on again, leaving this first station of the China Inland Mission behind them and travelling on the boat Fuh-ho ("Happy Harmony") in the substantially cheaper Chinese accommodations up the Yangtze River to Zhenjiang.

if English Christians only knew the need and the longing willingness of these dear souls to hear the glad tidings, and the joy, the unspeakable joy of a missionary's life, they would surely cry from the depths of yearning hearts, "Lord, here am I, send me, send me.