Neibaur arrived in
Nauvoo, Illinois, on 18 April 1841. There he established his dental practice and developed a close friendship with
Joseph Smith, Jr., whom he helped study
German and
Hebrew. His friendship was close enough that he heard an account of the
First Vision, which he recorded in his journal. In 1846, after
Smith's death, Neibaur and his wife Ellen remained in Nauvoo later than the first Mormon pioneers because Ellen was pregnant, but joined the second party. Neibaur was among the defenders of the city during the
Battle of Nauvoo. He then went to
Winter Quarters, Nebraska, and arrived in the
Salt Lake Valley, rejoining with the main body of The Church of Jesus Christ of Latter-day Saints (LDS Church) in 1848. In the
Utah Territory, he continued the practice of dentistry and was a manufacturer of matches.
Family Neibaur was the primary person to introduce
Mormonism to
Morris D. Rosenbaum, a Jew who later became his son-in-law. Neibaur's daughter Rebecca married industrialist and LDS Church leader
Charles W. Nibley, thus Rosenbaum's brother-in-law, and early business partner. Rosenbaum was instrumental—along with his second father-in-law, President Lorenzo Snow—in the founding and development of Brigham City, Utah, and served as county commissioner and president of the North Germany Mission. Neibaur's eldest daughter, Margaret Jane, married William Miller, the son of Eleazer Miller. Margaret Neibaur Miller's father-in-law, Eleazer, converted and baptized
Brigham Young (who would become the second prophet and President of The LDS Church). Neibaur is a great-grandfather of scholars
Hugh, Reid, and Richard Nibley, as well as founder of a large and diverse family to be found throughout the Western United States. His great-great-granddaughter is American sociologist, life coach, and best-selling author
Martha Beck. == References ==