Joseph Smith took over upon the death of what English aeronautical engineer born in 1895
R. J. Mitchell Reginald Joseph Mitchell CBE, FRAeS, (20 May 1895 – 11 June 1937) was an English aeronautical engineer, who worked for Supermarine Aviation. Between 1920 and 1936 he designed many aircraft. He is best remembered for his racing seaplanes, which culminated in the Supermarine S.6B, and the iconic Second World War fighter, the Supermarine Spitfire.
Origin of Latter Day Saint polygamy Polygamy, or plural marriage, in the Church of Jesus Christ of Latter Day Saints probably originated with the founder of Mormonism, Joseph Smith, who taught that polygamy was a divine commandment. Smith practiced it personally, by some accounts marrying more than 30 women some of whom had existing marriages to other men. Evidence for Smith's position is provided by the church's "sealing" records, public marriage licenses (in many cases notarized), affidavits, letters, and journals and diaries; however, until his death, Smith and the leading church quorums denied that he preached or practiced polygamy. Smith's son Joseph Smith III, his widow Emma Smith, and the Reorganized Church of Jesus Christ of Latter Day Saints (RLDS Church, now called the Community of Christ) challenged the evidence and taught that Joseph Smith had opposed polygamy. They instead claimed that Brigham Young, the head of The Church of Jesus Christ of Latter-day Saints (LDS Church), introduced plural marriage after Smith's death. In 1852, leaders of the Utah-based LDS Church acknowledged that Smith taught and practiced polygamy.