Sidi Mubarak Bombay was sort of a combined guide, translator and nurse, and often the supervisor of the African laborers on expeditions through eastern and equatorial Africa in the 19th century.
Research:

SYMHC Classics: Dr. Lucy Hobbs Taylor
29:58

Behind the Scenes Minis: Carry-on Bags
28:38

Gustave Flaubert and the ‘Madame Bovary’ Trial
45:15