Ezra Thompson Clark was born on 23 November 1823 in Lawrenceville, Illinois, to Timothy Baldwin Clark and Polly Keeler. He was one of the early settlers of Farmington, Utah Territory. On 12 July 1885, he was appointed president of the high priests quorum in Farmington, and around 1895 he was ordained a patriarch. He died on 17 October 1901.
 “Clark, Ezra Thompson,” in Andrew Jenson, Latter-day Saint Biographical Encyclopedia, vol. 3 (Salt Lake City: Andrew Jenson History, 1920), 343–344; “Clark, Ezra T.,” in Frank Esshom, Pioneers and Prominent Men of Utah (Salt Lake City: Utah Pioneers Book Publishing, 1913), 807; Horace J. Knowlton and Ford Clark, “History of Farmington,” 27 July 1921, typescript, 2, CHL; Farmington Ward Manuscript History, 12 July 1885, CHL.