John C. Bennett

John C. Bennett
Engraving of John C. Bennett in a Hand-in-waistcoat pose in his role as Major General of the Nauvoo Legion
Assistant President of the Church
April 8, 1841 (1841-04-08)  May 11, 1842 (1842-05-11)[1]
Called by Joseph Smith
End reason Excommunicated and removed from position
1st Mayor of Nauvoo, Illinois
In office
February 1, 1841 (1841-02-01)[2]  May 17, 1842 (1842-05-17)[1]
Successor Joseph Smith
Personal details
Born John Cook Bennett
(1804-08-03)August 3, 1804
Fairhaven, Massachusetts, United States
Died August 5, 1867(1867-08-05) (aged 63)
Polk City, Iowa, United States
Resting place Polk City Cemetery
41°46′23″N 93°42′07″W / 41.773°N 93.702°W / 41.773; -93.702 (Polk City Cemetery)
Spouse(s) Sarah Rider
Parents John Bennett
Abigail Cook

John Cook Bennett (August 3, 1804 – August 5, 1867) was an American physician and briefly a ranking and influential leader of the Latter Day Saint movement, who acted as mayor of Nauvoo, Illinois, and Major-General of the Nauvoo Legion in the early 1840s.

Early Mormon

Bennett's involvement in the Latter Day Saint movement came after several encounters with the community that had left him unimpressed. He nevertheless wrote several letters to Joseph Smith in Nauvoo, Illinois, in which he declared his desire to join the movement.[3] Bennett was essential to the passing of the Nauvoo city charter in the Illinois Legislature, the provisions of which he had helped craft. He even garnered praise for his lobbying efforts on behalf of the Mormons from the young Abraham Lincoln.

His efforts on behalf of the Mormons and the long time he spent living in the Mansion House in Nauvoo secured for Bennett the confidence of Smith. Smith was instrumental in promoting Bennett to ever greater civic and ecclesiastical responsibilities in Nauvoo. Bennett became a Counselor in the First Presidency, the mayor of Nauvoo, General of the Nauvoo Legion, and the chancellor of the University of Nauvoo.


Bennett was excommunicated from the church for adultery on May 11, 1842. Rumors of adultery, homosexuality, and unauthorized polygamy emerged. Contemporary sources indicate that Bennett used his trusted position as a doctor to allay fears of women he attempted to seduce by telling them that he could cause abortions by administering medicine if they became pregnant.[4] While Bennett was mayor, he was caught in private sexual relations with women in the city. He told the women that the practice, which he termed "spiritual wifery", was sanctioned by God and Smith and that Smith did the same. When discovered, he privately confessed his crimes, produced an affidavit that Smith had no part in his adultery, and was disciplined accordingly.

Later life

After Bennett left Nauvoo in May 1842, he claimed he had been the target of an attempted assassination by Nauvoo Danites, who were disguised in drag. He soon became a bitter antagonist of Smith and the Latter Day Saint church, reportedly even vowing to drink the blood of Smith.

In July 1842, he wrote a series of letters to The Sangamo Journal, accusing Smith of conspiring to assassinate former Missouri Governor Boggs.[5]

In late 1842, Bennett published History of the Saints: Or, An Exposé of Joe Smith and Mormonism[6], accusing Smith and his church of crimes including treason, conspiracy to commit murder, prostitution, and adultery, with a preface that begins: "I have been induced to prepare and publish the following work by a desire to expose the enormous iniquities which have perpetrated by one of the grosses and most infamous impostors that ever appeared upon the face of the earth, and by many of his minions, under the name and garb of Religion, and professedly by the direct will and command of Almighty God."[7] Through his newspaper writings and book, Bennett appeared to encourage Missouri's June 1843 attempt to extradite Smith to stand trial for treason. Ironically, Smith escaped extradition, albeit narrowly, by virtue of the powerful Nauvoo charter for which Bennett had been a principal author.

In the fall of 1843, Bennett visited George M. Hinkle, a Mormon who was excommunicated after surrendering Smith to the Missouri Militia in 1838. Bennett's subsequent letter to the editor of the Hawk-Eye and Iowa Patriot describing the Mormon "Doctrine of Marrying for Eternity" is the first of his writings that discusses eternal marriage, as compared to the free love/spiritual wife doctrine he previously accused Smith of practicing, in which sexual relations were not in the context of committed marriage.[8] It is unclear whether Bennett learned of eternal marriage from Hinkle or from correspondents inside Nauvoo.

Bennett briefly returned to Nauvoo in December 1843, but the sole record of that visit is a notation in Smith's daybook from his general store showing a payment of the rent Bennett owed for the 39 weeks he lived in the Mansion House in 1840 to 1841. After December 1843, Bennett is recorded to have lectured only once more against Mormonism during Smith's life, in Boston, during the spring of 1844. At the 1844 Boston lecture, Bennett was not well received: he was pelted with rotten eggs and chased through Boston by the "vast assemblage," which ran over several Boston police officers in the process.

After Smith's assassination in Carthage, Illinois, on June 27, 1844, Bennett surprised many by returning briefly to Mormonism and joining forces first with Sidney Rigdon and then with James Strang, two of several Mormons contending for leadership of the movement. Bennett united with the "Strangites," who founded their own Mormon community on Beaver Island in Michigan. With Bennett's enthusiastic support, polygamy was introduced into the Michigan Mormon community. Shortly thereafter, in 1847, amid yet more charges of sexual misconduct, Bennett was excommunicated from the Strangite community.[9] Bennett did not associate with any Latter Day Saint group for the remainder of his life.

Bennett has been accused of having a part in Smith's murder, but, as his biographer Andrew F. Smith (no relation to Joseph Smith) states, based on the extant evidence, "Bennett appears to have had no influence on the events that unfolded in Carthage during June 1844."[10]

Bennett is often credited with introducing into Mormonism the term "spiritual wifery," the term he used for both his own practice of "free love" and for the Nauvoo practice of plural marriage. The term was occasionally used by Mormon leaders such as Brigham Young, who spoke of the shock he received when introduced by Smith to "the spiritual wife doctrine," referring to plural marriage. One of Bennett's legacies was the conflation of plural marriage with "free love" in the popular imagination. The term "spiritual wifery," with its mixed connotations of polygyny and promiscuity, was frequently used in the national dialogue and in activism against Mormon polygamy.


Bennett's troubled relationship with the Mormons has overshadowed his other notable activities, including commanding a company for the Union in the American Civil War. Beginning in 1835, Bennett was an early champion of the health benefits of the tomato; a pioneer in the use of chloroform as an anesthetic, publishing his findings in 1848; and the creator of several breeds of chicken, including Plymouth Rock fowl, which he exhibited in Boston in 1849. From 1830 to 1846, Bennett worked to establish institutions of higher learning, many of which were medical colleges. Bennett's practice of "selling diplomas" clouds that achievement, and only one educational institution survived Bennett's connection with it.[11]

Bennett left behind an extensive body of letters and published works on his various endeavors, including two books, History of the Saints, and The Poultry Book.[12] Bennett died at 63 in Polk City, Iowa.


  1. 1 2 Givens, George W; Givens, Sylvia (2010). 500 Little-Known Facts About Nauvoo. Cedar Fort. p. 247. ISBN 1462100333. Retrieved 23 July 2013. - Bennett was "Disfellowship from the Church" on May 11, 1842, meaning he could no longer "serve in a church calling," and resignation on May 17, 1842
  2. Garr, Arnold K. "Joseph Smith: Mayor of Nauvoo" (PDF). Mormon Historic Sites Foundation. pp. 5–6. Retrieved 22 July 2013.
  3. Bennett, John C. (1842). History of the Saints; or, an Expose of Joe Smith and Mormonism. Boston: Leland & Whiting. pp. 5–10.
  4. Hedges, Andrew H.; Smith, Alex D. (2010). "Joseph Smith, John C. Bennett, and the Extradition Attempt, 1842". In Holzapfel, Richard Neitzel; Jackson, Kent P. Joseph Smith, the Prophet and Seer. Provo, Utah; Salt Lake City, Utah: BYU Religious Studies Center; Deseret Book. ISBN 978-0-8425-2753-8. OCLC 495616860.
  7. Bennett, John C. (1842). History of the Saints; or, an Expose of Joe Smith and Mormonism. Boston: Leland & Whiting. p. 218.
  8. Smith, Andrew F (1971). The Saintly Scoundrel: The Life and Times of Dr. John Cook Bennett. Urbana and Chicago: University of Illinois Press. p. 138.
  9. Smith, Andrew F (1971). The Saintly Scoundrel: The Life and Times of Dr. John Cook Bennett. Urbana and Chicago: University of Illinois Press. p. 164.
  10. Smith, Andrew F (1971). The Saintly Scoundrel: The Life and Times of Dr. John Cook Bennett. Urbana and Chicago: University of Illinois Press. pp. 138–141.
  11. Smith, Andrew F (1971). The Saintly Scoundrel: The Life and Times of Dr. John Cook Bennett. Urbana and Chicago: University of Illinois Press. pp. 188–189.
  12. Smith, Andrew F (1971). The Saintly Scoundrel: The Life and Times of Dr. John Cook Bennett. Urbana and Chicago: University of Illinois Press. pp. 237–244.


Political offices
First Mayor of Nauvoo, Illinois
February 1, 1841 (1841-02-01)May 17, 1842 (1842-05-17)
Succeeded by
Joseph Smith
Church of Jesus Christ of Latter Day Saints titles
Preceded by
Hyrum Smith
Assistant President of the Church
April 8, 1841 (1841-04-08)May 11, 1842 (1842-05-11)
With: Hyrum Smith
Office Discontinued
(after Hyrum Smith's
death in 1844)
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