By Grant Misbach (married to Alene Clegg Misbach)

The ancestor of this clegg branch is Henry Clegg, who was born August 4, 1788 at Walton LeDale, Lancashire, England. He married Ellen Cardwell of the same town and they had eight children.  Walton LeDale is a suburb of Preston, which was one of the first places where the gospel was preached by the Church of Jesus Christ of Latter Day Saints. Two of Henry's sons accepted the gospel and came to Utah and settled in primarily Heber Valley, but also in Springville.  These sons were Jonathan and Henry.
Jonathan had eight children and 50 grandchildren (and possibly more). Henry, who had three wives, had 25 children and 112 grandchildren. This makes 162 great grandchildren who are Utah descendants of Henry Clegg (senior). It is estimated that there are approximately 3,000 descendants of Henry Clegg (senior) in America.
Five other Clegg branches have been located in Utah.  Presently research has not been able to prove that these branches are related.  But this is quite probable since all apparently came from England and four of the six branches came from the county of Lancashire.  The other five branches are:
Descendants of Thomas Clegg and Anne Massey of Heaton Norris, Lancashire, England, who settled in Logan, Utah.
Descendants of Joseph Clegg and Mary Ogden, of Oldham, Lancashire, England, who settled in Tooele, Utah.  The main son is Benjamin Clegg.
Descendants of Thomas Clegg of Sagarfold, Lancashire, England. He married (1) Susannah Redman and (2) Susannah Proctor. He and his children settled in American Fork, Utah
Descendants of Nathaniel Clegg and Ann Leaf of Yorkshire, England. He died in England and his wife Ann died near Fort Laramie, Wyoming enroute to Utah. The children settled in Springville, Utah. 
(Also Israel Clegg, son of the Henry Clegg who moved on to Heber, stayed in Springville along with many of his children)
Descendants of John Clegg, who in 1855 was one of the original settlers in Fairfield, Utah County.  This became the site of Camp Floyd which was established in 1858 by Johnston's army.  Nothing more is know about this John Clegg or his family. Possibly he may be from of the other Utah Branches.