John William Campbell (herbalist)
John William Campbell was a Creole herbalist who worked at Connaught Hospital during the early 1900s. John William Campbell was the son of Oluwole John Campbell and Sarah Campbell and the brother of William John Campbell, a mayor of Freetown, Sierra Leone. Another elder brother of the same namesake was Justice of Peace of the Colony of Sierra Leone. John Campbell was one of the first herbalists working at Connaught Hospital when it opened in 1912. John William Campbell married Esther Thomas, the daughter of Shekou Thomas a prominent man from Victoria, Guinea or "Karafarande, Guinea