• Two obituaries in the Avery family (including his) state that they emigrated in 1849.  This is confirmed by contemporary land records indicating that his mother received a plot of land in Salt Lake in 184.  Noah Avery also served as a teamster in the William B. Preston company in 1864. 

William B. Preston Company (1864)

• Age at Departure: 25
• Out-and-Back Teamster

Company Unknown (1849)

• Age at Departure: 10

Sources

• 1850 Utah Census, Great Salt Lake, Utah Territory.
• 1900 United States Federal Census
• "Captain William B. Preston, memorandum book, 1864," Perpetual Emigrating Fund Company church trains accounts 1861-1868, Captains' accounts 1862-1868.
• “Captain William B. Preston Company (first ox train), manifest, 1864.” Perpetual Emigrating Fund Company church trains accounts 1861-1868, Captains’ accounts, 1862-1868.
• “Freight Manifests, 1864, 1868.” In Perpetual Emigrating Fund Company church trains accounts 1861-1868, Freight manifests, 1861-1868, p. 12-31. (CR 376 8, Box 1, Folder 4)
• "Recent Deaths," Deseret Evening News, 24 Jan. 1912, 3.
• Utah Death Certificates.