• William traveled to the valley in Brigham Young's 1847 company and was part of the 6th Company of Ten led by Charles Shumway. He was re-baptized in the Salt Lake Valley on 8 August 1847.  At the time of the 1850 federal census (early 1851) he has living in Utah County.  His name first appears in the records of the Utah Territorial Militia  on 27 September 1851.  He was a member of the 6th Quorum of Seventy,   At various times in his life, particularly in Nauvoo, his surname was spelled in sources as "Wordsworth." In Utah, it was spelled "Wadsworth" in the census, obituary, property list, and numerous newspaper articles.  His gravestone shows his surname as "Wordsworth."

  In 1856 he was a returning missionary.

Brigham Young Vanguard Company (1847)

• Age at Departure: 37

Abraham O. Smoot Company (1856)

• Age at Departure: 46

Sources

• Albert P. Rockwood journals, 1847-1853, Journal, 1847 April-July.
• Caleb Grant report, 12 December 1856, in Historical Department journal history of the Church, 1830-2008, 9 November 1856, 31-35.
• "Death of William Wadsworth," Utah Enquirer, 24 January 1888, 2.
• "Deaths," Deseret News, 1 February 1888, 48.
• Find a Grave
• Heber C. Kimball journal in Heber C. Kimball papers, 1837-1866.
• Missionary Record Index, 1830-1971.
• Norton Jacob reminiscence and journal, 1844 May-1852 January, 47-85.
• "The Utah Pioneers," Deseret Weekly, 25 August 1894, 294.
• Thomas Bullock journals, 1843-1849, Journal, 1847 April-June.
• Utah State History Cemeteries and Burials Database.
• William Clayton diaries, 1846-1853, Folder contents: (2) Volume 2, 1847.
• Woolley, Franklin Benjamin, Autobiography [ca. 1856], 13-15.