Aaron Belisarius Cosmo Sibthorpe (183?–1916) was a nineteenth century African historian. He published both History and Geography of Sierra Leone in 1868.
Sibthorpe was born somewhere near Benin, and after being captured and enslaved, he became a Liberated African in Sierra Leone while still a youth. He remained in Sierra Leone all his life. He became a school teacher, teaching in villages around Freetown.
He became a prominent member of the Krio community. However by the time of his death he had been forgotten.
References
A. B. C. Sibthorpe Wikipedia(Text) CC BY-SA