Sir Henry Morton Stanley was a Welsh-American explorer, journalist, soldier, colonial administrator, author and politician who was famous for his exploration of Central Africa and his search for missionary and explorer David Livingstone. Besides his discovery of Livingstone, he is mainly known for his search for the sources of the Nile and Congo rivers, the work he undertook as an agent of King Leopold II of the Belgians which enabled the occupation of the Congo Basin region, and his command of the Emin Pasha Relief Expedition. He was knighted in 1897, and served in Parliament as a Liberal Unionist member for Lambeth North from 1895 to 1900.

David Livingstone was a Scottish physician, Congregationalist, pioneer Christian missionary with the London Missionary Society, and an explorer in Africa. Livingstone was married to Mary Moffat Livingstone, from the prominent 18th-century Moffatt missionary family. Livingstone came to have a mythic status that operated on a number of interconnected levels: Protestant missionary martyr, working-class "rags-to-riches" inspirational story, scientific investigator and explorer, imperial reformer, anti-slavery crusader, and advocate of British commercial and colonial expansion. As a result, Livingstone became one of the most popular British heroes of the late 19th-century Victorian era.