David Livingstone (19 March 1813 – 1 May 1873), often misspelled as Livingston, was a Scottish Congregationalist pioneer medical missionary with the London Missionary Society and an explorer in Africa. His meeting with H. M. Stanley gave rise to the popular quotation "Dr. Livingstone, I presume?"
Edward "Ed" McCully (1927 – 1956) was an evangelical Christian missionary to Ecuador who, along with four other missionaries, was killed while attempting to evangelize the Huaorani people, through efforts known as Operation Auca.
Gladys May Aylward (24 Feb 1902 – 3 Jan 1970) was a British evangelical Christian who was originally turned away when she volunteered for mission service. She was so determined to get to China she worked as a maid to earn her own passage. In China, she & another missionary, Jeannie Lawson, ran an inn & told Bible stories to travelers to spread Gospel. During Japanese invasion, she rescued 100 children by trekking them over a mountain.