A Dr. John C. Bennett writes to the Saints stating his intention to move to Nauvoo and join the Saints. He will later become an influential member of the Church. He has the reputation of being both a genius and an imposter. In addition to being a professor, a preacher, a doctor, and a military leader, he is also claimed to be an abortionist, a wife deserter, and a traitor. When he gains Joseph's confidence, he helps draft the Nauvoo charter and push its passage through legislature, shows him how to drain the Nauvoo swamps, and administers quinine to the sick of Nauvoo, thus saving many lives. He later writes one of the most famous exposes against the Saints. In writing to Joseph a second time he states that "wealth is no material object with me. I desire to be happy."
[Conkling, Christopher J., Joseph Smith Chronology; History of the Church of Jesus Christ of Latter-day Saints (7 volumes) 4:169-70.]