There are conflicting reports of both the year and place of Du Chaillu's birth. The year is variously given as 1831 (the consensus of modern scholars), as his likely place of birth. A contemporary obituary quotes a statement made by Du Chaillu referring to "the United States, my country by adoption, and ... France, my native land." His entry in the 1901-1902 edition of ''
Marquis Who's Who'' — which was based on information he supplied directly to the editors — says 1838 in New Orleans. His grave marker identifies his place of birth as
Louisiana, and the year as 1839.
Edward Clodd, Du Chaillu's friend, told the story differently in his memoirs. Clodd mentioned
New York as another claimed location, but asserted that Du Chaillu's true birthplace was the French
Indian Ocean island territory of
Île Bourbon (now called
Réunion). He further claimed that du Chaillu's mother was a
mulatto woman. In 1979, historian Henry H. Bucher presented evidence to back Clodd's view, including records of Du Chaillu's father. Bucher argued that Du Chaillu, as a member of the European scientific community, would have tried to obfuscate or conceal the family history that would have labeled him a
quadroon. In the 19th century atmosphere of
scientific racism, great apes and
Sub-Saharan Africans were often considered to both have small
cranial capacity, and thus be innately unable to achieve civilization; Du Chaillu's credibility as a scientist and explorer would have suffered as a result. Indeed, comments in a letter by Du Chaillu's contemporary, the ethnologist of Africa
Mary Kingsley, indicate that at least some scientists who thought poorly of Du Chaillu knew of his ancestry or other information presumed to be disqualifying. In his youth, he accompanied his father, a French trader in the employment of a Parisian firm, to the west coast of Africa where, at a station on the
Gabon, he was educated by missionaries and acquired an interest in and knowledge of the country, its natural history, its natives, and their languages before emigrating to the U.S. in 1852. ==Africa==