This name is listed on a "monument erected AD 1888, in memory of those members of the church of Jesus Christ of Latter Day Saints who died in 1846, 1847, and 1848, during their exodus to seek a home beyond the Rocky Mountains."∼I am posting "Sources" of Thomas Hayes b.1817 of Warrington, England.

(1) Source:
Membership of the Church of Jesus Christ of Latter Day Saints,1830-1848
Name: Thomas Hayes
Marriage Date-23 May 1843
Marriage Place-Hancock, Illinois, USA
Household Members:
Name Age
Polly Hess
Henry Jackson
Thomas Hayes
Nephi Hayes
Alma Hayes
Abraham Smith Workman

(2) Source:
U.S. and International Marriage Records, 1560-1900.
Name: Thomas Hayes
Gender Male
Birth Year, 1817
Spouse Name, Polly Jane Hess
Spouse Birth Place, PA
Spouse Birth Year, 1819
Marriage Year, 1843
Marriage State, IL
Page# 1
Household Members:
Name Age
Thomas Hayes
Polly Jane Hess

(3)Source: Membership of The Church of Jesus Christ of Latter-day Saints, 1830-1848.
Name: Thomas Hayes
Gender, Male
Birth Date, 1817
Death Date, Jun 1846
Death Place, Mount Pisgah, Harrison, Iowa, USA
Alternate Death Places Council Bluffs, Pottawattamie, Iowa, USA
Burial Place, Mount Pisgah, Harrison, Iowa, USA (on the west side of river.)
Comments: Thomas wrote a petition dated May 8, 1839, asking for$l,400 in property damage. Comments: #21. Thomas was a member of Zion's Camp.
Household Members
Name Age
Thomas Hayes
Polly Hess
Nephi Hayes
Alma Hayes

(4) Source:
Illinois, Compiled Marriages, 1791-1850
Name: Thomas Hays
Spouse, Polly Parks
Marriage Date, 23 May 1843
Marriage County Hancock
Household Members
Name Age
Thomas Hays
Polly Parks

Note:Miss Polly Jane Hess,first marriage
(5)Source:Missouri Marriage Record,1805-2002
Name: Miss Poles Hess (Polly Hess)
Marriage Date, 25 Apr 1839
Marriage Place, Ray, Missouri, USA
Registration Place, Ray, Missouri, USA
Spouse: Madison Parks
Household Members
Name Age
Miss Polly Hess (Polly Hess)
Madison Parks

(6)Source:Mr. Hess listed on the Monument was Jacob Hess b.21 May 1792 of Waynesboro,Franklin,Pa. and father-in-law of Thomas Hayes. Jacob Hess died 26 June 1846 and Thomas Hayes died June 1846. Inscription on Monument reads: Mr.Hess and Mr. Hays(buried on West side of river).

(7)source:
Mount Pisgah Branch Journal ca. 1846 folder 1,page 68 SLC,Utah.
states the following:Died at Mount Pisgah 24 July 1846 Thomas Hays age 52. (he was born 1794). This Thomas might have been Thomas Hayes b.1817 Father of Warrington,England.

(8)Source:
Lancashire, England, Church of England Baptisms, Marriages and Burials, 1538-1812
Name: Thomas Hayes
Birth Date, 2 Jan 1796
Baptism Date, 1796
Parish Liverpool, Lancashire, England
Phillimore Ecclesiastical Parish Maps 4824
Father's Name, John Hayes
Mother's Name, Elizabeth Owens
Register Type Bishops Transcripts:
Reference Number Dr/2/70
Thomas Hayes parents were Thomas Hayes b.2 Jan 1796 in Liverpool,Lancashire,England and Alice Harrison b.6 Dec 1795 in Liverpool,England. They both died in 1857,Warrington,England.

(9)Source:
His Chastening Rod:Cholera Epidemics and the Mormons, written by Robert T Divett
Zion's Camp, 19 June, 1833, Page 11, Thomas Hayes sick with Cholera
Thomas Hayes b.1817 was a member of Zion's Camp in 1833 he would have been 17 years old and he did contracted cholera and survived. He would have known the prophet Joseph Smith!
About this time Brother Ezra] Thayer and Thomas Hayes were attacked with the cholera, and bro. Joseph Hancock was taken during the storm I called the camp together...

(10) Source:
England, Select Births and Christenings, 1538-1975
Name: Thomas Hayes
Gender, Male
Baptism Date, 12 Jan 1817
Baptism Place, Warrington, Lancashire, England
Father, Thomas Hayes
Mother, Alice
FHL Film Number 1468986
Household Members:
Name Age
Thomas Hayes
Alice
Thomas Hayes
(11)Source:
In 2003 when the Nauvono temple was dedicated my cousin went there and found a record indicating Thomas Hayes b.12 jan 1817 was born in Warrington, (12) Source :England.https://www.familysearch.org/tree/person/collaborate/LLSV-6TQ
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Source Information
Title
Kirtland Elders Quorum record-page 87
Note
Kirtland Elders' Quorum Record: (Page 87) Thomas Hayes (also Heyes) (c1817-1846). Not the Thomas Hayes who participated in the march of Zion's Camp. Ordained elder 25 Jan 1836. Expelled from MO 1838-1839. Probably died at Mt. Pisgah, IA while crossing plains to Great Basin. (Page 3) 25 January 1836: This evening a meeting, of Elders, was [called] by president of said quorum, to insturct them, that they may prepare themselves for the holy anointing.(1) The meeting being duly organized, Presidents, Sidney Rigdon, F.G. Williams, and Hyrum Smith, were chosen to give said instructions...2ndly: The presidents ordained and blessed according to the blessings of the Sons of Zion....Tho[mas[- Hayes,... (1) The "holy anointing" was part of a complex of sanctifying ordinances intended to prepare the brethren to receive a spiritual outpouring known in Kirtland as "an endowment of power."