Please answer the following question: Facts: - death place: lagos , nigeria - known for: smallpox prevention - birth name: alexander johnson williams - death date: 1935 - occupation: medical doctor - birth date: 9 june 1861 - name: oguntola sapara - nationality: nigerian - birth place: freetown , sierra leone - alma mater: st. thomas 's hospital medical school Based on these bullet points, write a short biography describing the life of oguntola sapara .
A:
oguntola odunbaku sapara -lrb- june 1861 -- june 1935 -rrb- was a doctor , originally from sierra leone , who spent most of his career and life in nigeria .he was best known for his campaign against secret societies that were spreading smallpox .