Definition of Stanley, Sir Henry Morton
- (1841–1904), Welsh explorer; born John Rowlands. In 1871, he found David Livingstone (1813–73) at Lake Tanganyika in Africa. After Livingstone’s death, Stanley continued his explorations in Africa, charting Lake Victoria (1874), tracing the course of the Congo (1874–77), and mapping Lake Albert (1889). In 1889, he was the first European to visit Lake Edward.