Ranulph Twistleton-Wykeham Fiennes (born March 7, 1944), British soldier and explorer, led the Transglobe Expedition (1979-1982), the first surface journey around the Earth to visit both North and South poles.
... discovered Lake Victoria
Henry Morton Stanley, (1841-1904), found back Livingstone; later explored Lake Victoria, Lake Tanganyika and the Congo River
William Stairs, ...