Horace's parents were:
Hiram Clark, b. Sep. 22, 1795 in Wells, Rutland County, VT. and d. Dec. 27, 1853 in San Bernardino, San Bernardino County, CA. &
(second wife) Thankful Gill, b. 1808–1872

Hiram Clark marr. Thankful Gill in about 1828/1829 in Antwerp, Jefferson, NY.

Hiram & Thankful Clark's children were:
1. George Sakerman Clark, b. Jul. 11, 1830 in Antwerp, Jefferson, NY. and d. Apr, 1871 in Salt Lake City, Salt Lake, UT.
2. Horace Heber Clark, b. Feb. 8, 1833 in Antwerp, Jefferson County, NY. and d. Nov. 7, 1900 inSan Bernardino, San Bernardino County, CA.
3. Mary Jane Clark, b. 1834 in Antwerp, Jefferson, NY. and d. in 1837.
4. Louise Clark was born May 16, 1835 in Antwerp, Jefferson, NY. and d. Aug. 28, 1838 in Quincy, Adams County, IL.
5. Alma Clark, b. 1837 in Antwerp, Jefferson, NY. and d. Aug. 25, 1838 in Quincy, Adams County, IL.
6. Hiram Clark, b. Sep. 1839 in Nauvoo, Hancock County, IL. and d. Oct. 19, 1839 in Nauvoo, Hancock County, IL.
7. Stephen Clark, b. Jan. 14, 1842 in Nauvoo, Hancock County, IL. and d. Jun. 8, 1842
8. Hiram Wallace Clark Jr., b. Dec. 3, 1850 in Provo, Utah County, UT. and d. Nov. 21, 1932 in San Bernardino, San Bernardino County, CA.

On Dec. 27, 1853, Horace's father, Hiram Clark, died in San Bernardino, San Bernardino county, CA.

On May 28, 1855, Horace Heber Clark and Susan Cole were married in Springville, UT.

Horace & Susan Clark's children were:
1. Horace Hugh Clark, b. Mar. 8, 1856 in Springville, Utah County, UT. and d. Oct. 16, 1857 in Springville, Utah County, UT.
2. William Hiram Clark, b. Sep. 13, 1857 in Springville, Utah County, UT. and d. Aug. 2, 1895 in San Bernardino County, CA. William marr. Mary Clews Clark on Mar. 3, 1878.
3. Mary Jane"Jennie" Clark, b. Apr. 29, 1859 in Springville, Utah County, UT. and d. Apr. 3, 1938 in Los Angeles, Los Angeles County, CA. Jennie marr. Luther Menifee Wilson in 1872.
4. George Horace Clark, b. Apr. 1861 in San Bernardino, San Bernardino county, CA. and died before 1939 (living in Indian Territory in 1900 and AZ. in 1902). George marr. Maggie O'Ro(u)rke in Feb. 1893 in San Bernardino county, CA.
5. Daniel "Dan" Gill Clark, b. June 10, 1863 in San Bernardino, San Bernardino county, CA. and d. 1922. Dan marr. Nettie Hampton on Nov. 28, 1888 at Wildomar, CA.
6. Susan Thankful Clark , b. Nov. 26, 1866 in San Bernardino, San Bernardino County, CA. and d. Oct. 15, 1955 in Pomona, Los Angeles County, CA. Susan marr. Oscar Smith Carson and Andrew J. Bruce.
7. Sarah Louise Clark, b. Mar. 2, 1868 in San Bernardino, San Bernardino County, CA. and d. May 29, 1937 in San Bernardino, San Bernardino County, CA. Sarah marr. James Sylvester Worley in May 1885.
8. Charles Ira Clark, b. Apr. 18, 1870 in San Bernardino, San Bernardino county, CA. and d. 1880.
9. Elizabeth Alvina Clark, b. Sep. 22, 1871 in San Bernardino, San Bernardino County, CA. and d. Nov. 3, 1961 in Huntington Park, Los Angeles County, CA. Elizabeth marr. Charles Boynton Trocksell on Dec. 25, 1889.
10. Dudley Montgomery Clark, b. Sep. 16, 1874 in San Bernardino, San Bernardino county, CA. and d. Dec. 25, 1930 in Corcoran, Kings county, CA.. Dudley marr. Helen Beaty _ark on Mar. 15, 1923.
11. Nannie 'Nan' Maxwell Clark, b. Dec. 25, 1876 in San Bernardino, San Bernardino county, CA. and d. Jul. 29, 1947 in Los Angeles county, CA. Nannie marr. Henry L. Miller on Jan. 28, 1906 in Los Angeles county, CA.

In the 1860 U. S. census, 27 yr. old Horace Clarke, a teamster, b. in OH, was living in San Bernardino, San Bernardino, CA. with his
23 yr. old (inferred) wife, Susan Clarke, b. in OH.
4 yr. old (inferred) son, Horace H Clarke, b. in UT. Territ.
3 yr. old (inferred) son, Wm H Clarke, b. in UT. Territory
2 yr. old (inferred) daughter, Mary J Clarke, b. in UT. Territ.
27 yr. old Wm Kilgore, a day laborer, birthplace unknown
35 yr. old Joseph Fant, b. in Germany
Horace's personal estate was valued at $1,200.

In the 1870 U. S. census, 38 yr. old Horace Clark, a teamster, b. in NY., was living in San Bernardino, San Bernardino, CA. with his
24 (32?) yr. old (inferred) wife, Susan Clark, b. in OH.
13 yr. old (inferred) son, William H. Clark, attending school, b. in UT.
11 yr. old (inferred) daughter, Mary J Clark, attending school, b. in UT.
9 yr. old (inferred) son, George H Clark, attending school, b. in CA.
7 yr. old (inferred) son, Daniel G Clark, attending school, b. in CA.
5 yr. old (inferred) daughter, Susan F Clark, b. in CA.
2 yr. old (inferred) daughter, Sarah L Clark, b. in CA.

In 1872, Horace's mother, Thankful Clark, died.

In the 1880 U. S. census, 47 yr. old Horace Clark, a teamster, b. in NY., was living in San Bernardino, San Bernardino county, CA., with his
42 yr. old wife, Susan Clark, b. in OH.
19 yr. old son, George Clark, b. in CA.
17 yr. old son, Daniel Clark, b. in CA.
14 yr. old daughter, Susan Clark, b. in CA.
12 yr. old daughter, Sarah Clark, b. in CA.
8 yr. old daughter, Lizzie Clark, b. in CA.
6 yr. old Dudley Clark, b. in CA.
3 yr. old daughter, Nanny Clark, b. in CA.
Horace's parents were both b. in NY. Susan's parents were both b. in OH.

On Jun. 26, 1896, Horace's wife, Susan (Cole) Clark, died in San Bernardino, San Bernardino County, CA.

In the 1900 U. S. census, 68 yr. old widower, Horace Clark, b. Feb. 1832 in NY., was living in a home he owned free and clear at 343 6th St., West side in San Bernardino Ward 2, San Bernardino county, CA with his
23 yr. old daughter, Nannie Clark, b. in CA.
Horace's parents were both b. in VT.

The Weekly Sun (San Bernardino, CA.), P. 7, Col. 3
Fri., Nov. 16, 1900
There was a large attendance yesterday afternoon at the funeral of Horace Clark and the St. Paul's M. E. Church South, was filled with friends of the deceased. The exercises conducted by Rev. J. F. G. Finley, were under the auspices of Phoenix Lodge, No. 178, F. and A. M. and the member of Valley Lodge, No. 27 K. of P., of which the deceased was also a member turned out to assist in the obsequies.
The services at the church were very impressive, the music being by the choir, assisted by Miss Mae Beam, who sang a solo most impressively. The pall bearers were from both lodges, being Hon. Byron Waters, A. J. Downer, and John Clark for the Masonic lodge and W. A. Vale, Thomas Hadden and T. McFarlane for the Knights of Pythias. At the grave the ceremonies were conducted by the officers and members of Phoenix Lodge, No. 178, F. and A. M.
The deceased was born in Antwerp, Jefferson county N. Y. in 1830. His father, Hiram Clark, was of English descent and New England parentage, a blacksmith by trade, and pioneered at Independence, Missouri, as early as 1847. He came to California in 1850, and died at San Bernardino in 1853.
Horace Clark grew up at Independence, which was then a small town on the western frontier and participated in many of the thrilling events of early days, incident to the immense emigration from east and south to the Pacific coast, a large share of which made Independence its place of rendezvous for departure westward. Horace Clark when little more than a youth commenced carrying United States mail between independence and Salt Lake, and in 1853 was with Sheldon Stoddard, John Hunt, Sidney P. Waite and the lamented John Mayfield, among the first to carry the mail between Salt Lake and San Bernardino. Later, he for years engaged in freighting across the desert, and latterly for about nine years was an employee of San Bernardino city and in charge of the city park and pavilion. He was a member of the San Bernardino Society of California Pioneers, a man of positive nature, strict integrity and held the esteem of all who knew him.
The deceased leaves surviving him four sons, William, George, Benjamin and Dudley, and four daughters, Mrs. Jennie Wilson, Mrs. Oscar Carson, Mrs. J. F. Worley and Nannie Clark. The wife of his youth, who was Susannah Cole, died two years ago.

Photo courtesy of City of San Bernardino Historical and Pioneer Society.

According to the Membership Records of The Church of Jesus Christ of Latter-day Saints for 1830-1848,
Horace Clark was b. Feb. 8, 1832, b. Antwerp, Jefferson county, NY.
His parents were: Hyrum Clark & Thankful Gill
Residences: 1842; Nauvoo, Hancock, Illinois, USA 1850; Utah, USA
LDS Church Ordinance Data: Baptism Date: April 8, 1840
LDS Temple Ordinance Data: Endowment Date: February 16, 58 or February 1918
Comments: Horace was a member of the Nauvoo 4th ward.