A family of eminent Kenyan archaeologists and anthropologists. Louis (1903–72) pioneered the investigation of human origins in East Africa. He began excavations at Olduvai Gorge and together with Mary discovered the remains of early hominids and their implements, including Australopithecus in 1959. His British-born wife Mary (1913–96) discovered Homo habilis and Homo erectus at Olduvai in 1960. Their son Richard (born 1944) was director of the Kenya Wildlife Service 1989–94.