Sariah was the daughter of Joel Hills Johnson and his first wife, Anna Pixley Johnson ("Johnson" was her maiden name).

Sariah's family arrived in Salt Lake City by wagon train Oct 19, 1848. Sariah met John Eagar on June 1, 1849 and they were married one month later in Salt Lake City on July 1, 1849, in her father's house in Salt Lake City.

Sariah and John had eight children together:

Anna Sariah Eagar (1850 - 1934)
John Thomas Eagar (1851 - 1942)
William Walter Eagar (1853 - 1941)
Julia Hills Eagar (1855 - 1940)
Joel Sixtus Eagar (1858 - 1947)
Susan Elizabeth Eagar (1860 - 1900)
Benjamin Franklin Eagar (1862 - 1884)
Mary Elvira Eagar (1863 - 1883)

Their first two children were born in Salt Lake City, Utah. Sometime between 1851 and 1853, John and Sariah moved to Manti, Utah, where their other six children were born.

John died of tuberculosis in 1864, when he was 41 years old. Sariah, at 31, was left with eight young children to raise. Her brother, Nephi Johnson, came to Manti from Iron County, Utah, with wagons and took Sariah to Virgin, Utah, to be near other family members, including her father, Joel Hills Johnson.
--------------------
About two years later, Sariah married Andrew Jackson Workman, Sr. March 17, 1866 in Salt Lake City, Utah.

Andrew wrote of the marriage:

"[In 1865]...on Christmas day was called to part with my wife, Rebecca. she died in childbed, taking cold two or three days after the child was born, and died in two or three more days. The child was a fine boy, we called him Joseph James. He lived until October, then died and was buried by the side of his mother. that left me with three children, Louisa, Evelyn, and Manti.

"So, in 1866 [5 months after his first wife's death], I thought I would get married again, so I made a bargain with Mrs. Sariah A. Eagar, widow of John Eagar who died two years before. We started for Salt Lake to get married, March 3rd. Got married on the 17th. by Wilford Woodruff, started for home and arrived there all well, April 8, and fixed and moved into our new house before it was finished, but I managed to get the roof on in a few months, and raised a small crop of cotton, wheat, etc., and in December 1867, my wife, Sariah, had a fine boy. We called him Amos Jackson."
-----------------------
Sariah and Andrew were married for 43 years. They had five children together:

Amos Jackson Workman (1866 - 1952)
Nephi Johnson Workman (1868 - 1931)
Charles Adelbert Workman, Sr. (1870 - 1923)
Edwin Monroe Workman (1872 - 1940)
Jacob Lewis Workman (1874 - 1911)

Sariah gave birth to a total of thirteen children, and raised Andrew's children from his first marriage; thus raising a total of sixteen children.

She lived another 16 years after Andrew's death, dying at 93.

Sariah is not buried next to either one of her husbands: John Eagar was buried in the Manti City Cemetery, Manti, Utah, and Andrew Workman was buried next to his first wife in the Virgin City Cemetery, in Virgin, Utah.