• Roswell was part of the 2nd Company of Ten led by Ezra Taft Benson. He left the company on 3 June at Fort Laramie to take a message to the Mormon Battalion sick detachments and Mississippi Saints at Pueblo, Colorado. In Wilford Woodruff's journal, his name is spelled as "Stephens." At some point he returned to Winter Quarters. He is seen crossing the plains again in 1851 with the Smith Company. 

Brigham Young Vanguard Company (1847)

• Age at Departure: 38

John G. Smith Company (1851)

• Age at Departure: 42
• Head of Household

Sources

• Albert P. Rockwood journals, 1847-1853, Journal, 1847 April-July.
• Amasa M. Lyman collection, 1832-1877,  Journal, 1847 April 8-September 10, 1-26 and 1-10. Events recorded by Albert Carrington.
• Appleton M. Harmon diary, 1847 April-July.
• Barney, Edson, [Autobiographical Sketch], in Mormon biographical sketches collection [ca. 1900-1975], reel 6, box 7, fd. 1, item 2.
• Brunson, Lewis, Autobiography, 1861, 16-17
• Greene, E. M., to D. Mackintosh, 26 July 1851, in Frontier Guardian, 8 Aug. 1851, 2.
• Heber C. Kimball journal in Heber C. Kimball papers, 1837-1866.
• "Highly Important News from Salt Lake and the Plains, More Indian Depredations," Frontier Guardian, , 22 Aug. 1851, 2.
• Howard Egan, Pioneering the West, 1846 to 1878, edited and compiled by William M. Egan (1917), 21-105.
• Jacob, Norton, Reminiscence and journal 1844 May-1852 January, 47-85.
• Journal History of The Church of Jesus Christ of Latter-day Saints, Supplement after 31 December 1851, 1.
• Patten, R. R., [Letter excerpt] in E. M. Greene to D. Mackintosh, 26 July 1851, Frontier Guardian, 8 Aug. 1851, 2.
• "Still Later from Salt Lake and the Plains," Frontier Guardian, 22 Aug. 1851, 2.
• Thomas Bullock journals, 1843-1849, Journal, 1847 April-June.
• Tippets, John Harvey, Autobiography [ca. 1882], 99-113.
• Utah State History Cemeteries and Burials Database.
• Wilford Woodruff journal, 1847 January-1853 December in Wilford Woodruff journals and papers, 1828-1898, 25-77.
• William Clayton diaries, 1846-1853, Folder contents: (2) Volume 2, 1847.
• Wilson, Rachel Priscilla Loveless, "Biography of Priscilla Wilson, 1923," 2-7.
• Young, Lorenzo Dow, Diaries, 1846-1852 and 1888-1891, vol. 1.