I could not feel more satisfied and at rest if the entire Whitmer family had testified
Mark Twain
Roughing It, Chapter 16
Witnesses of the Gold Plates and their relationship to Joseph Smith
Signatures (all in the handwriting of Oliver Cowdery)
Oliver Cowdery Co-founder, Cousin
David Whitmer Close Friend
Martin Harris Financial Backer
Christian Whitmer Close Friend
Jacob Whitmer Close Friend
Peter Whitmer, Jr. Close Friend
John Whitmer Close Friend
Hiram Page Friend, Related to Whitmers
Joseph Smith, Sr. Father
Hyrum Smith Older Brother
Samuel Harrison Smith Younger Brother
See https://www.churchofjesuschrist.org/study/scriptures/bofm/three?lang=eng & https://www.churchofjesuschrist.org/study/scriptures/bofm/eight?lang=eng