It is believed, but not confirmed
that the Desire Sedgwick who married "Mr Pomeroy"
is the "Kesiah" Sedgwick who married Titus Pomeroy.

417
Desire Sedgwick  [Samuel Sedgwick / Deborah Higgins]
b. December 8, 1758, Tyringham, Berkshire, Massachusetts
bp December 31, 1758, Tyringham, Berkshire, Massachusetts¹ (6F-3)
d. May 19, 1835, [Sand Lake, Rensselaer, New York]⁵
bu Sand Lake, Rensselaer, New York, Sand Lake Union Cemetery⁵
m. 1778, Titus Pomeroy

Titus Pomeroy  [Ebenezer Pomeroy / Rachel Searle]
b. October 10, 1757, [Southampton, Hampshire, Massachusetts]
d. February 17, 1846, [Sand Lake, Rensselaer, New York]⁵
bu Sand Lake, Rensselaer, New York, Sand Lake Union Cemetery⁵

Census Records:

Desire Sedgwick's youngest brother Elijah Sedgwick (1769-1861) was interviewed in April, 1854 by George Sedgwick, first of the Sedgwick genealogists. He told George that his sister had married "Mr. Pomeroy."

Book Excerpt: History and Genealogy of the Pomeroy Family, Albert A Pomeroy, page 265 as quoted in A Sedgwick Genealogy: Descendants of Deacon Benjamin Sedgwick compiled by Hubert Sedgwick, page 173. (Hubert added the quote in that book because one or more of the descendants of Benjamin married Pomeroy, and he wasn't sure who Kesiah Sedgwick was.)

"Titus Pomeroy (Ebenezer, Eldad, Caleb, Eltweed) b. October 10, 1757, m. 1778, Kesiah Sedgwick, who died November 19, 1836. They moved from Northampton, Mass., to Rensselaer County, N.Y., in 1781. He served two enlistments during the American Revolution, registering from South Hadley, Mass., as private in Captain Moses Montagne's Company, April 19, 1775, and Captain Benjamin Benney's Company, March 13, 1777. He died at Sand Lake, N.Y., February 17, 1846; buried at Sliter's Corners by the side of his wife."

Book Excerpt: Genealogies of Connecticut Families, "Selected and Introduced by Gary Boyd Roberts", which contains genealogies "Extracted from the New England Historical and Genealogical Register", Volume III page147:

paraphrase: Titus Pomeroy b. 1757 m. 1778 Keziah (or Dinah) Sedgwick, was Town Clerk in Norwich, Massachusetts. Titus was son of Ebenezer, son of Eldad, son of Caleb, son of Eltweed.

Notice of Intention to Marry was published at Southampton, Hampshire, Massachusetts on December 12, 1778 by Titus Pomeroy and "Kezia" Sedgwick.⁶

According to the burial records, the wife of Titus Pomeroy was named "Desiah" not "Kesiah."⁵

I am convinced that Titus Pomeroy's wife was Desire Sedgwick. The age is right; the location is right. Even the burial record is right! Desire is said to have married "Mr Pomeroy." Also, some records list the daughters name as Kesiah, some as Desire. From where did "Kesiah" come? There appears to have been a Keziah Pomeroy born in 1758, daughter of Joseph Pomeroy and Abigale Searle, who married a Daniel Smith. Were Joseph Pomeroy and Abigale Searle brother and sister of Ebenezer Pomeroy and Rachel Searle?

Titus Keziah/Desire Pomeroy apparently lived in Norwich, Hampshire, Connecticut for an unknown period of time. THeir two youngest children are listed as having been born there. Where are the records of the church they attended? The children's birth or baptismal records? They may tell us something, but let's find the originals, not transcriptions, so we can see how it's actually spelled.

Children:

More about Desire Sedgwick:

Census records for Titus Pomeroy:

Film 879901
Norwich Massachusetts Town Records 1797-1834

1. The Sedgwick Collection (MSS B46) at the New Haven Colony Historical Society papers of Hubert Merrill Sedgwick, Francis Morris Sedgwick and Frederick J Sedgwick,
genealogists of the family of Robert Sedgwick (1613 - 1656)

2. Census records, any of those indicated.

3. West Hartford, Connecticut, Town Records

4. West Hartford, Connecticut, Congregational Church

5. Interments in Rensselaer Co., NY Cemeteries
part of the Rensselaer Co., NY GenWeb
these records:

SurnameE	Firstname	Death_Date	Age	Wife/Husband	Town	Cemetery
Pomeroy	Desiah	19 May 1835	76y	Titus Pomeroy	Sand Lake	Sand Lake Union
Pomeroy	Titus	17 Feb 1846	88y,4m,7d	Desiah Pomeroy	Sand Lake	Sand Lake Union

6. Southampton, Massachusetts Town Records
"...Marriages and Inten_____" [last part illegible on film] Town of Southampton"
available on LDS Film 0892587 Item 2
extracted April 6, 2004 by Dennis Sedgwick at LDS FHC Los Angeles"
"Titus Pomeroy and Kezia Sedgwick both of Southampton Published Dec 12, 1778"