• Joseph's parents (Andrew Clews and Mary Ann Thomas) and his younger brother (George) died at St. Louis, Missouri in 1849. The family had crossed the Atlantic on the ship Isaac Allerton in 1844.  Joseph and his sister Emma Jane traveled across the plains together.  At the time of the 1850 Utah census Joseph was in the household of Francis and Hannah Pullin. Harrison Burgess ordained Joseph a Seventy in March 1851.  According to the 1852 Bishop's Report Joseph was in Cedar City.  He died at San Bernardino, California.  His surname was spelled "Clewes" in various sources.  

Company Unknown (1851)

• Age at Departure: 19

Sources

• 1850 Utah Census, Great Salt Lake, Utah Territory.
• New Orleans, Passenger Lists, 1813-1963.
• "Registry of Names of Persons Residing in the Various Wards as to Bishops' Reports, Great Salt Lake City, Dec. 28th, A.D. 1852" in Key to Migration Sources, Great Britain and North America: A Manual for Students Attending the Second Annual Priesthood Genealogical Research Seminar, June 19-23, 1967 (Provo: Brigham Young University Division of Continuing Education, 1967), edited by Norman Edgar Wright. 
• Utah, FamilySearch, Early Church Information File, 1830-1900
• Walker, Ronald W., "'Save the Emigrants': Joseph Clewes on the Mountain Meadows Massacre," BYU Studies , 42, no. 1 (2003): 140-42.